Mercurial > projects > mde
view mde/gui/widget/createWidget.d @ 91:4d5d53e4f881
Shared alignment for dynamic content lists - finally implemented! Lots of smaller changes too.
Some debugging improvements.
When multiple .mtt files are read for merging, files with invalid headers are ignored and no error is thrown so long as at least one file os valid.
author | Diggory Hardy <diggory.hardy@gmail.com> |
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date | Thu, 16 Oct 2008 17:43:48 +0100 |
parents | b525ff28774b |
children | 2a364c7d82c9 |
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/* LICENSE BLOCK Part of mde: a Modular D game-oriented Engine Copyright © 2007-2008 Diggory Hardy This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /** This module contains code to create a widget based on an enumeration value passed at runtime. * * It could be a part of the WidgetLoader.makeWidget function, but having it here makes things * tidier. */ module mde.gui.widget.createWidget; import mde.gui.widget.Ifaces; import mde.gui.exception : WidgetDataException; import mde.gui.content.Content; //NOTE - maybe move IContent to a separate module // Widgets to create: import mde.gui.widget.layout; import mde.gui.widget.miscWidgets; import mde.gui.widget.TextWidget; import mde.gui.widget.Floating; import tango.util.log.Log : Log, Logger; private Logger logger; static this () { logger = Log.getLogger ("mde.gui.widget.createWidget"); } /** Create a widget. * * Usually called by the widget manager's makeWidget function. * * Widget created of type data.ints[0] (see enum WIDGET_TYPES), with one of the following CTORs: * --- * this (IWidgetManager mgr, WidgetData data); * // Called if (data.ints[0] & WIDGET_TYPES.TAKES_CONTENT): * this (IWidgetManager mgr, WidgetData data, IContent content); * --- *************************************************************************************************/ IChildWidget createWidget (IWidgetManager mgr, widgetID id, WidgetData data, IContent content) in { assert (mgr !is null, "createWidget: mgr is null"); } body { if (data.ints.length < 1) { logger.error ("No int data; creating a debug widget"); data.ints = [WIDGET_TYPE.Debug]; } int type = data.ints[0]; // type is first element of data //pragma (msg, binarySearch ("type", WIDGETS)); mixin (binarySearch ("type", WIDGETS)); // creates widget by type: new XWidget (mgr, data [, parent]); // Not returned a new widget... logger.error ("Bad widget type: {}; creating a debug widget instead.",type); return new DebugWidget (mgr, id, data); } /+ for converting to a char[] name (unused) static this() { WIDGET_NAMES = [ FixedBlank : "FixedBlank", SizableBlank : "SizableBlank", Button : "Button", GridLayout : "GridLayout" ]; }+/ private: /// Widget types. enum WIDGET_TYPE : int { TAKES_CONTENT = 0x4000, // Flag indicates widget's this should be passed an IContent reference. PARENT = 0x8000, // widget can have children; not used by code (except in data files) // Use widget names rather than usual capitals convention Unnamed = 0x0, // Only for use by widgets not created with createWidget // blank: 0x1 FixedBlank = 0x1, SizableBlank = 0x2, Debug = 0xF, // buttons: 0x10 Button = 0x10, // labels: 0x20 ContentLabel = TAKES_CONTENT | 0x20, TextLabel = 0x21, GridLayout = TAKES_CONTENT | PARENT | 0x100, TrialContentLayout = PARENT | 0x110, FloatingArea = PARENT | 0x200, } //const char[][int] WIDGET_NAMES; // Only used for binarySearch algorithm generation; must be ordered by numerical values. const char[][] WIDGETS = [ "FixedBlank", "SizableBlank", "Debug", "Button", "TextLabel", "ContentLabel", "TrialContentLayout", "FloatingArea", "GridLayout"]; /* Generates a binary search algorithm. */ char[] binarySearch (char[] var, char[][] consts) { if (consts.length > 3) { return "if (" ~ var ~ " <= WIDGET_TYPE." ~ consts[$/2 - 1] ~ ") {\n" ~ binarySearch (var, consts[0 .. $/2]) ~ "} else {\n" ~ binarySearch (var, consts[$/2 .. $]) ~ "}\n"; } else { char[] ret; foreach (c; consts) { ret ~= "if (" ~ var ~ " == WIDGET_TYPE." ~ c ~ ") {\n" ~ " debug (mdeWidgets) logger.trace (\"Creating new "~c~"Widget.\");\n" ~ " static if (WIDGET_TYPE."~c~" & WIDGET_TYPE.TAKES_CONTENT)\n" ~ " return new " ~ c ~ "Widget (mgr, id, data, content);\n" ~ " else\n" ~ " return new " ~ c ~ "Widget (mgr, id, data);\n" ~ "} else "; } ret = ret[0..$-6] ~ '\n'; // remove last else return ret; } } debug { // check items in WIDGETS are listed in order char[] WIDGETS_check () { char[] ret; for (int i = WIDGETS.length-2; i > 0; --i) { ret ~= "WIDGET_TYPE."~WIDGETS[i] ~" >= WIDGET_TYPE."~ WIDGETS[i+1]; if (i>1) ret ~= " || "; } return ret; } mixin ("static if ("~WIDGETS_check~") static assert (false, \"WIDGETS is not in order!\");"); }