projects/dynamin: dynamin/painting/windows_text

annotate dynamin/painting/windows_text_layout.d @ 96:301e077da540

Add the beginnings of a Windows Uniscribe text backend.

author	Jordan Miner <jminer7@gmail.com>
date	Wed, 02 May 2012 03:19:00 -0500
parents
children	604d20cac836

rev	line source
96 301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	1 // Written in the D programming language
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	2 // www.digitalmars.com/d/
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	3
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	4 /*
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	5 * The contents of this file are subject to the Mozilla Public License Version
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	6 * 1.1 (the "License"); you may not use this file except in compliance with
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	7 * the License. You may obtain a copy of the License at
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	8 * http://www.mozilla.org/MPL/
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	9 *
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	10 * Software distributed under the License is distributed on an "AS IS" basis,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	12 * for the specific language governing rights and limitations under the
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	13 * License.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	14 *
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	15 * The Original Code is the Dynamin library.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	16 *
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	17 * The Initial Developer of the Original Code is Jordan Miner.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	18 * Portions created by the Initial Developer are Copyright (C) 2007-2012
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	19 * the Initial Developer. All Rights Reserved.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	20 *
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	21 * Contributor(s):
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	22 * Jordan Miner <jminer7@gmail.com>
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	23 *
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	24 */
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	25
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	26 module dynamin.painting.windows_text_layout;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	27
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	28 public import dynamin.c.cairo;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	29 public import dynamin.c.cairo_win32;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	30 public import dynamin.c.windows;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	31 public import dynamin.c.uniscribe;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	32 public import dynamin.painting.graphics;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	33 public import tango.io.Stdout;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	34 public import tango.text.convert.Utf;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	35 public import tango.math.Math;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	36
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	37 //version = TextLayoutDebug;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	38
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	39 // TODO: move to array.d
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	40 bool containsT(T)(T[] array, T item) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	41 foreach(T item2; array) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	42 if(item == item2)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	43 return true;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	44 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	45 return false;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	46 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	47 template TextLayoutBackend() {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	48 uint charToWcharIndex(uint index) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	49 uint wcharIndex = 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	50 foreach(wchar c; text[0..index])
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	51 wcharIndex++;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	52 return wcharIndex;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	53 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	54 uint wcharToCharIndex(uint wcharIndex) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	55 uint decoded = 0, ate = 0, index = 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	56 while(decoded < wcharIndex) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	57 decoded += (decode(text[index..$], ate) <= 0xFFFF ? 1 : 2);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	58 index += ate;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	59 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	60 return index;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	61 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	62
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	63 uint nextRight(uint index) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	64 uint wIndex = charToWcharIndex(index);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	65 // this requires using the output from ScriptLayout to move in visual order
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	66 return 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	67 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	68
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	69 //{{{ font fallback
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	70 static {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	71 int Latin;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	72 int Greek;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	73 int Cyrillic;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	74 int Armenian;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	75 int Georgian;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	76 int Hebrew;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	77 int Arabic;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	78 int Syriac;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	79 int Thaana;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	80 int Thai;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	81 int Devanagari;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	82 int Tamil;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	83 int Bengali;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	84 int Gurmukhi;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	85 int Gujarati;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	86 int Oriya;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	87 int Telugu;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	88 int Kannada;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	89 int Malayalam;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	90 int Lao;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	91 int Tibetan;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	92 //int Japanese;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	93 int Bopomofo;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	94 int CjkIdeographs;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	95 int CjkSymbols;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	96 int KoreanHangul;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	97 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	98 static this() {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	99 Latin = getUniscribeScript("JKL");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	100 Greek = getUniscribeScript("ΠΡΣ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	101 Cyrillic = getUniscribeScript("КЛМ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	102 Armenian = getUniscribeScript("ԺԻԼ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	103 Georgian = getUniscribeScript("ႩႪႫ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	104 Hebrew = getUniscribeScript("הוז");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	105 Arabic = getUniscribeScript("ثجح");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	106 Syriac = getUniscribeScript("ܕܗܚ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	107 Thaana = getUniscribeScript("ގޏސ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	108 Thai = getUniscribeScript("ฆงจ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	109 Devanagari = getUniscribeScript("जझञ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	110 Tamil = getUniscribeScript("ஜஞட");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	111 Bengali = getUniscribeScript("জঝঞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	112 Gurmukhi = getUniscribeScript("ਜਝਞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	113 Gujarati = getUniscribeScript("જઝઞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	114 Oriya = getUniscribeScript("ଜଝଞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	115 Telugu = getUniscribeScript("జఝఞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	116 Kannada = getUniscribeScript("ಜಝಞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	117 Malayalam = getUniscribeScript("ജഝഞ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	118 Lao = getUniscribeScript("ຄງຈ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	119 Tibetan = getUniscribeScript("ཇཉཊ");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	120 //Japanese = getUniscribeScript("せゼｶ"); // TODO: on XP, returned more than 1 item
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	121 Bopomofo = getUniscribeScript("ㄐㄓㄗ"); // Chinese
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	122 CjkIdeographs = getUniscribeScript("丛东丝");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	123 CjkSymbols = getUniscribeScript("、〜㈬");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	124 KoreanHangul = getUniscribeScript("갠흯㉡");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	125 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	126 // returns the Uniscribe script number (SCRIPT_ANALYSIS.eScript) from the specified sample text
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	127 static int getUniscribeScript(wchar[] sample) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	128 SCRIPT_ITEM[5] items;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	129 int itemsProcessed;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	130 HRESULT r = ScriptItemize(sample.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	131 sample.length,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	132 items.length-1,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	133 null,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	134 null,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	135 items.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	136 &itemsProcessed);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	137 assert(r == 0);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	138 assert(itemsProcessed == 1);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	139 return items[0].a.eScript.get();
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	140 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	141
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	142 // adds fallback fonts to the specified fallbacks array
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	143 void getFontFallbacks(int script, wchar[][] fallbacks) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	144 int i = 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	145 void addFallback(wchar[] str) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	146 fallbacks[i++] = str;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	147 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	148 if(script == Latin \|\| script == Greek \|\| script == Cyrillic)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	149 addFallback("Times New Roman");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	150 else if(script == Hebrew \|\| script == Arabic)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	151 addFallback("Times New Roman");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	152 else if(script == Armenian \|\| script == Georgian)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	153 addFallback("Sylfaen"); // fits in well with English fonts
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	154 else if(script == Bengali)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	155 addFallback("Vrinda");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	156 else if(Devanagari)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	157 addFallback("Mangal");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	158 else if(script == Gujarati)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	159 addFallback("Shruti");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	160 else if(script == Gurmukhi)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	161 addFallback("Raavi");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	162 else if(script == Kannada)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	163 addFallback("Tunga");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	164 else if(script == Malayalam)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	165 addFallback("Kartika");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	166 else if(script == Syriac)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	167 addFallback("Estrangelo Edessa");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	168 else if(script == Tamil)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	169 addFallback("Latha");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	170 else if(script == Telugu)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	171 addFallback("Gautami");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	172 else if(script == Thaana)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	173 addFallback("MV Boli");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	174 else if(script == Thai)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	175 addFallback("Tahoma"); // fits in well with English fonts
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	176 //else if(script == Japanese)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	177 // addFallback("MS Mincho"); // Meiryo doesn't fit in with SimSun...
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	178 else if(script == Bopomofo \|\| script == CjkIdeographs \|\| script == CjkSymbols)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	179 addFallback("SimSun");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	180 else if(script == KoreanHangul)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	181 addFallback("Batang");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	182 else if(script == Oriya)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	183 addFallback("Kalinga"); // new with Vista
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	184 else if(script == Lao)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	185 addFallback("DokChampa"); // new with Vista
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	186 else if(script == Tibetan)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	187 addFallback("Microsoft Himalaya"); // new with Vista
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	188
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	189 // Arial Unicode MS is not shipped with Windows, but is with Office
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	190 addFallback("Arial Unicode MS");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	191 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	192 //}}}
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	193
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	194 /*bool isRightAligned() {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	195 return alignment == TextAlignment.Right \|\|
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	196 ((alignment == TextAlignment.Justify \|\| alignment == TextAlignment.Natural) &&
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	197 items[0].a.fRTL);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	198 }*/
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	199 /*struct Run {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	200 double height;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	201 int wtextIndex;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	202 int itemIndex;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	203 WORD[] logClusters; // length == length of text as UTF-16
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	204 WORD[] glyphs;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	205 SCRIPT_VISATTR[] visAttrs; // length == glyphs.length
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	206 int[] advanceWidths; // length == glyphs.length
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	207 GOFFSET[] offsets; // length == glyphs.length
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	208 }*/
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	209 // TODO: should save memory if logClusters, glyphs, visAttrs, advanceWidths, & offsets
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	210 // were made as one big array and these were just slices of them
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	211 // Then reuse the big array every time in layout()
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	212
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	213 void backend_splitRun(uint runIndex, uint splitIndex) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	214 visAttrs.insert(visAttrs[runIndex], runIndex);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	215 visAttrs[runIndex] = visAttrs[runIndex][0..runs[runIndex].glyphs.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	216 visAttrs[runIndex+1] = visAttrs[runIndex+1][runs[runIndex].glyphs.length..$];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	217
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	218 offsets.insert(offsets[runIndex], runIndex);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	219 offsets[runIndex] = offsets[runIndex][0..runs[runIndex].glyphs.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	220 offsets[runIndex+1] = offsets[runIndex+1][runs[runIndex].glyphs.length..$];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	221 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	222 // returns the number of UTF-8 code units (bytes) it takes to encode the
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	223 // specified UTF-16 code unit; returns 4 for a high surrogate and 0 for a low surrogate
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	224 int getUtf8Width(wchar c) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	225 if(c >= 0x00 && c <= 0x7F) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	226 return 1;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	227 } else if(c >= 0x0080 && c <= 0x07FF) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	228 return 2;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	229 } else if(isHighSurrogate(c)) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	230 return 4;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	231 } else if(isLowSurrogate(c)) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	232 return 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	233 } else {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	234 return 3;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	235 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	236 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	237
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	238 SCRIPT_ITEM[] items;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	239 List!(SCRIPT_VISATTR[]) visAttrs; // one for each Run, same length as Run.glyphs
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	240 List!(GOFFSET[]) offsets; // one for each Run, same length as Run.glyphs
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	241 void backend_preprocess(Graphics g) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	242 wchar[] wtext = toString16(text);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	243
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	244 //{{{ call ScriptItemize() and ScriptBreak()
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	245 SCRIPT_CONTROL scriptControl;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	246 SCRIPT_STATE scriptState;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	247 // TODO: digit substitution?
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	248
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	249 if(items.length < 50)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	250 items.length = 50;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	251 int itemsProcessed;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	252 // On 7, ScriptItemize returns E_OUTOFMEMORY outright if the 3rd param isn't at least 12.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	253 // Every period, question mark, quotation mark, start of number, etc. starts a new item.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	254 // A short English sentence can easily have 10 items.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	255 while(ScriptItemize(wtext.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	256 wtext.length,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	257 items.length-1,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	258 &scriptControl,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	259 &scriptState,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	260 items.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	261 &itemsProcessed) == E_OUTOFMEMORY) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	262 items.length = items.length * 2;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	263 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	264 items = items[0..itemsProcessed+1]; // last item is the end of string
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	265
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	266 for(int i = 0; i < logAttrs.length; ++i) // clear array from previous use
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	267 logAttrs[i] = LogAttr.init;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	268 logAttrs.length = text.length;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	269 int laIndex = 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	270
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	271 SCRIPT_LOGATTR[] tmpAttrs;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	272 bool lastWhitespace = false;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	273 for(int i = 0; i < items.length-1; ++i) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	274 wchar[] itemText = wtext[items[i].iCharPos..items[i+1].iCharPos];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	275 tmpAttrs.length = itemText.length;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	276 HRESULT result = ScriptBreak(itemText.ptr, itemText.length, &items[i].a, tmpAttrs.ptr);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	277 if(FAILED(result))
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	278 throw new Exception("ScriptBreak() failed");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	279
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	280 // ScriptBreak() does not set fSoftBreak for the first character of items, even
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	281 // when it needs to be (it doesn't know what comes before them...). This loop sets
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	282 // it for characters after a breakable whitespace.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	283 for(int j = 0; j < tmpAttrs.length; ++j) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	284 if(tmpAttrs[j].fWhiteSpace.get()) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	285 lastWhitespace = true;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	286 } else {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	287 if(lastWhitespace) // not whitespace, but last char was
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	288 tmpAttrs[j].fSoftBreak.set(true);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	289 lastWhitespace = false;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	290 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	291
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	292 // have to convert the SCRIPT_LOGATTR array, which corresponds with the UTF-16
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	293 // encoding, to the LogAttr array, which corresponds with the UTF-8 encoding
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	294 if(tmpAttrs[j].fSoftBreak.get())
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	295 logAttrs[laIndex].softBreak = true;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	296 if(tmpAttrs[j].fCharStop.get())
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	297 logAttrs[laIndex].clusterStart = true;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	298 if(tmpAttrs[j].fWordStop.get())
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	299 logAttrs[laIndex].wordStart = true;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	300
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	301 laIndex += getUtf8Width(itemText[j]);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	302 if(isHighSurrogate(itemText[j]))
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	303 j++; // skip the low surrogate
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	304 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	305 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	306 assert(laIndex == logAttrs.length);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	307 //}}}
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	308
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	309 // ScriptShape and some other functions need an HDC. If the target surface is win32,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	310 // just use its DC. Otherwise, create a 1x1 DIB and use its DC.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	311 cairo_surface_t* targetSurface = cairo_get_target(g.handle);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	312 cairo_surface_flush(targetSurface);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	313 cairo_t* cr = g.handle;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	314 HDC hdc = cairo_win32_surface_get_dc(targetSurface);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	315 cairo_surface_t* tmpSurface;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	316 if(!hdc) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	317 cairo_format_t format = CAIRO_FORMAT_ARGB32;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	318 if(cairo_surface_get_type(targetSurface) == CAIRO_SURFACE_TYPE_IMAGE)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	319 format = cairo_image_surface_get_format(targetSurface);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	320 tmpSurface = cairo_win32_surface_create_with_dib(format, 1, 1);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	321 cr = cairo_create(tmpSurface);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	322 hdc = cairo_win32_surface_get_dc(tmpSurface);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	323 assert(hdc != null);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	324 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	325 scope(exit) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	326 if(tmpSurface) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	327 cairo_destroy(cr);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	328 cairo_surface_destroy(tmpSurface);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	329 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	330 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	331
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	332 clearRuns(); // releaseScaledFont() must be called when a run is removed
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	333
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	334 if(!visAttrs)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	335 visAttrs = new List!(SCRIPT_VISATTR[]);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	336 visAttrs.clear();
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	337 if(!offsets)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	338 offsets = new List!(GOFFSET[]);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	339 offsets.clear();
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	340 List!(BYTE) levels = new List!(BYTE)(items.length+4); // 4 gives padding for 2 formattings
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	341
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	342 SaveDC(hdc);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	343 int splitter(uint i) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	344 return i < items.length ? wcharToCharIndex(items[i].iCharPos) : -1;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	345 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	346 int itemIndex = 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	347 // Merge the SCRIPT_ITEMs with runs that have the same format
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	348 // The only formats that matter here are the ones that affect the size or
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	349 // shape of characters, so use &fontFormatRuns
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	350 foreach(start, length, format; fontFormatRuns(&splitter)) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	351 uint wstart = charToWcharIndex(start);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	352 uint wend = charToWcharIndex(start+length);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	353 if(items[itemIndex+1].iCharPos == wstart)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	354 itemIndex++;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	355
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	356 levels.add(items[itemIndex].a.s.uBidiLevel.get());
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	357
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	358 cairo_matrix_t ctm;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	359 cairo_get_matrix(cr, &ctm);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	360 cairo_scaled_font_t* font = getScaledFont(format.fontFamily,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	361 format.fontSize,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	362 format.bold,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	363 format.italic,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	364 ctm);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	365 cairo_win32_scaled_font_select_font(font, hdc);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	366 // Cairo sets up the HDC to be scaled 32 times larger than stuff will be drawn.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	367 // get_metrics_factor returns the factor necessary to convert to font space units.
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	368 // Font space units need multiplied by the font size to get device units
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	369 // multipling by to_dev converts from logical units to device units
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	370 double to_dev = cairo_win32_scaled_font_get_metrics_factor(font) * format.fontSize;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	371
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	372 SCRIPT_CACHE cache = null;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	373 scope(exit) ScriptFreeCache(&cache);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	374
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	375 wchar[] range = wtext[wstart..wend];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	376
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	377 WORD[] outGlyphs = new WORD[range.length * 3 / 2 + 16];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	378 WORD[] logClust = new WORD[range.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	379 SCRIPT_VISATTR[] sva = new SCRIPT_VISATTR[outGlyphs.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	380 int glyphsReturned;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	381 do {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	382 HRESULT result = ScriptShape(hdc,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	383 &cache,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	384 range.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	385 range.length,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	386 outGlyphs.length,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	387 &items[itemIndex].a,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	388 outGlyphs.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	389 logClust.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	390 sva.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	391 &glyphsReturned);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	392 if(result == E_OUTOFMEMORY) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	393 outGlyphs.length = outGlyphs.length * 3 / 2;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	394 sva.length = outGlyphs.length;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	395 continue;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	396 } else if(result == USP_E_SCRIPT_NOT_IN_FONT) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	397 // TODO: font fallback
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	398 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	399 /*SCRIPT_FONTPROPERTIES fontProps;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	400 ScriptGetFontProperties(hdc, &cache, &fontProps);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	401 Stdout("*****Blank: ")(fontProps.wgBlank).newline;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	402 Stdout(fontProps.wgDefault).newline;*/
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	403 } while(false);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	404 outGlyphs = outGlyphs[0..glyphsReturned];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	405 sva = sva[0..glyphsReturned];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	406 visAttrs.add(sva);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	407
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	408 int[] advance = new int[outGlyphs.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	409 GOFFSET[] goffset = new GOFFSET[outGlyphs.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	410 // the docs mistakenly say the GOFFSET array is optional,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	411 // but it is actually the ABC structure
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	412 if(FAILED(ScriptPlace(hdc,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	413 &cache,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	414 outGlyphs.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	415 outGlyphs.length,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	416 sva.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	417 &items[itemIndex].a,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	418 advance.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	419 goffset.ptr,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	420 null)))
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	421 throw new Exception("ScriptPlace failed");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	422 for(int i = 0; i < goffset.length; ++i) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	423 goffset[i].du = cast(LONG)(goffset[i].du * to_dev);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	424 goffset[i].dv = cast(LONG)(goffset[i].dv * to_dev);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	425 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	426 offsets.add(goffset);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	427 // TODO: handle errors well
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	428 // TODO: kerning here
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	429
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	430 Run run;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	431 run.font = font;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	432 cairo_font_extents_t extents;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	433 cairo_scaled_font_extents(run.font, &extents);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	434 run.height = extents.height;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	435
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	436 run.start = start;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	437 run.length = length;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	438 run.rightToLeft = items[itemIndex].a.fRTL.get() ? true : false;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	439
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	440 run.clusterMap = new uint[run.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	441 int clusterIndex = 0;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	442 for(int i = 0; i < logClust.length; ++i) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	443 int width = getUtf8Width(range[i]);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	444 if(isHighSurrogate(range[i]))
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	445 i++; // skip the low surrogate
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	446 for(; width > 0; --width) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	447 run.clusterMap[clusterIndex] = logClust[i];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	448 clusterIndex++;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	449 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	450 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	451 assert(clusterIndex == run.length);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	452
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	453 run.glyphs = new uint[outGlyphs.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	454 for(int i = 0; i < outGlyphs.length; ++i)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	455 run.glyphs[i] = outGlyphs[i];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	456
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	457 run.advanceWidths = new float[advance.length];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	458 for(int i = 0; i < advance.length; ++i)
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	459 run.advanceWidths[i] = advance[i] * to_dev;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	460
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	461 runs.add(run);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	462
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	463 cairo_win32_scaled_font_done_font(font);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	464
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	465 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	466 RestoreDC(hdc, -1);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	467 assert(itemIndex == items.length-2); // last item is end of string
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	468
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	469 // fill in visToLogMap
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	470 visToLogMap = new uint[runs.count];
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	471 if(FAILED( ScriptLayout(levels.count, levels.data.ptr, cast(int*)visToLogMap.ptr, null) ))
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	472 throw new Exception("ScriptLayout() failed");
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	473
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	474 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	475
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	476 static cairo_scaled_font_t* backend_createScaledFont(string family,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	477 double size,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	478 bool bold,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	479 bool italic,
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	480 cairo_matrix_t* ctm) {
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	481 LOGFONT lf;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	482 lf.lfHeight = -cast(int)size; // is this ignored by cairo? uses font_matrix instead?
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	483 lf.lfWeight = bold ? 700 : 400;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	484 lf.lfItalic = italic;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	485 lf.lfCharSet = 1; // DEFAULT_CHARSET
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	486 auto tmp = toString16(family);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	487 lf.lfFaceName[0..tmp.length] = tmp;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	488 lf.lfFaceName[tmp.length] = '\0';
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	489
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	490 auto face = cairo_win32_font_face_create_for_logfontw(&lf);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	491 scope(exit) cairo_font_face_destroy(face);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	492
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	493 cairo_matrix_t font_matrix;
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	494 cairo_matrix_init_scale(&font_matrix, size, size);
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	495 return cairo_scaled_font_create(face, &font_matrix, ctm, cairo_font_options_create());
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	496 }
301e077da540 Add the beginnings of a Windows Uniscribe text backend. Jordan Miner <jminer7@gmail.com> parents: diff changeset	497 }

Mercurial > projects > dynamin

annotate dynamin/painting/windows_text_layout.d @ 96:301e077da540