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comparison dwt/custom/CBannerLayout.d @ 41:6337764516f1

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Sync dwt/custom with dwt-linux (took copy of complete folder)
author Frank Benoit <benoit@tionex.de>
date Tue, 07 Oct 2008 16:29:55 +0200
parents f565d3a95c0a
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40:fbe68c33eeee 41:6337764516f1
5 * which accompanies this distribution, and is available at 5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html 6 * http://www.eclipse.org/legal/epl-v10.html
7 * 7 *
8 * Contributors: 8 * Contributors:
9 * IBM Corporation - initial API and implementation 9 * IBM Corporation - initial API and implementation
10 *
11 * Port to the D programming language: 10 * Port to the D programming language:
12 * Jacob Carlborg <jacob.carlborg@gmail.com> 11 * Frank Benoit <benoit@tionex.de>
13 *******************************************************************************/ 12 *******************************************************************************/
14 module dwt.custom.CBannerLayout; 13 module dwt.custom.CBannerLayout;
15 14
16 import Math = tango.math.Math;
17 15
18 import dwt.DWT; 16 import dwt.DWT;
19 import dwt.custom.CBanner;
20 import dwt.graphics.Point; 17 import dwt.graphics.Point;
21 import dwt.graphics.Rectangle; 18 import dwt.graphics.Rectangle;
22 import dwt.widgets.Composite; 19 import dwt.widgets.Composite;
23 import dwt.widgets.Control; 20 import dwt.widgets.Control;
24 import dwt.widgets.Layout; 21 import dwt.widgets.Layout;
25 import dwt.widgets.Scrollable; 22 import dwt.widgets.Scrollable;
23 import dwt.custom.CBanner;
24 import dwt.custom.CLayoutData;
25
26 import Math = tango.math.Math;
26 27
27 /** 28 /**
28 * This class provides the layout for CBanner 29 * This class provides the layout for CBanner
29 * 30 *
30 * @see CBanner 31 * @see CBanner
31 */ 32 */
32 class CBannerLayout : Layout { 33 class CBannerLayout : Layout {
33 34
34 protected Point computeSize (Composite composite, int wHint, int hHint, bool flushCache) { 35 protected override Point computeSize(Composite composite, int wHint, int hHint, bool flushCache) {
35 CBanner banner = cast(CBanner) composite; 36 CBanner banner = cast(CBanner)composite;
36 Control left = banner.left; 37 Control left = banner.left;
37 Control right = banner.right; 38 Control right = banner.right;
38 Control bottom = banner.bottom; 39 Control bottom = banner.bottom;
39 bool showCurve = left !is null && right !is null; 40 bool showCurve = left !is null && right !is null;
40 int height = hHint; 41 int height = hHint;
41 int width = wHint; 42 int width = wHint;
42 43
43 // Calculate component sizes 44 // Calculate component sizes
44 Point bottomSize = new Point(0, 0); 45 Point bottomSize = new Point(0, 0);
45 if (bottom !is null) { 46 if (bottom !is null) {
46 int trim = computeTrim(bottom); 47 int trim = computeTrim(bottom);
47 int w = wHint is DWT.DEFAULT ? DWT.DEFAULT : Math.max(0, width - trim); 48 int w = wHint is DWT.DEFAULT ? DWT.DEFAULT : Math.max(0, width - trim);
48 bottomSize = computeChildSize(bottom, w, DWT.DEFAULT, flushCache); 49 bottomSize = computeChildSize(bottom, w, DWT.DEFAULT, flushCache);
50 }
51 Point rightSize = new Point(0, 0);
52 if (right !is null) {
53 int trim = computeTrim(right);
54 int w = DWT.DEFAULT;
55 if (banner.rightWidth !is DWT.DEFAULT) {
56 w = banner.rightWidth - trim;
57 if (left !is null) {
58 w = Math.min(w, width - banner.curve_width + 2* banner.curve_indent - CBanner.MIN_LEFT - trim);
59 }
60 w = Math.max(0, w);
49 } 61 }
50 Point rightSize = new Point(0, 0); 62 rightSize = computeChildSize(right, w, DWT.DEFAULT, flushCache);
51 if (right !is null) { 63 if (wHint !is DWT.DEFAULT) {
52 int trim = computeTrim(right); 64 width -= rightSize.x + banner.curve_width - 2* banner.curve_indent;
53 int w = DWT.DEFAULT;
54 if (banner.rightWidth !is DWT.DEFAULT) {
55 w = banner.rightWidth - trim;
56 if (left !is null) {
57 w = Math.min(w, width - banner.curve_width + 2 * banner.curve_indent - CBanner.MIN_LEFT - trim);
58 }
59 w = Math.max(0, w);
60 }
61 rightSize = computeChildSize(right, w, DWT.DEFAULT, flushCache);
62 if (wHint !is DWT.DEFAULT) {
63 width -= rightSize.x + banner.curve_width - 2 * banner.curve_indent;
64 }
65 } 65 }
66 Point leftSize = new Point(0, 0); 66 }
67 if (left !is null) { 67 Point leftSize = new Point(0, 0);
68 int trim = computeTrim(left); 68 if (left !is null) {
69 int w = wHint is DWT.DEFAULT ? DWT.DEFAULT : Math.max(0, width - trim); 69 int trim = computeTrim(left);
70 leftSize = computeChildSize(left, w, DWT.DEFAULT, flushCache); 70 int w = wHint is DWT.DEFAULT ? DWT.DEFAULT : Math.max(0, width - trim);
71 } 71 leftSize = computeChildSize(left, w, DWT.DEFAULT, flushCache);
72
73 // Add up sizes
74 width = leftSize.x + rightSize.x;
75 height = bottomSize.y;
76 if (bottom !is null && (left !is null || right !is null)) {
77 height += CBanner.BORDER_STRIPE + 2;
78 }
79 if (left !is null) {
80 if (right is null) {
81 height += leftSize.y;
82 }
83 else {
84 height += Math.max(leftSize.y, banner.rightMinHeight is DWT.DEFAULT ? rightSize.y : banner.rightMinHeight);
85 }
86 }
87 else {
88 height += rightSize.y;
89 }
90 if (showCurve) {
91 width += banner.curve_width - 2 * banner.curve_indent;
92 height += CBanner.BORDER_TOP + CBanner.BORDER_BOTTOM + 2 * CBanner.BORDER_STRIPE;
93 }
94
95 if (wHint !is DWT.DEFAULT)
96 width = wHint;
97 if (hHint !is DWT.DEFAULT)
98 height = hHint;
99
100 return new Point(width, height);
101 } 72 }
102 73
103 Point computeChildSize (Control control, int wHint, int hHint, bool flushCache) { 74 // Add up sizes
104 Object data = control.getLayoutData(); 75 width = leftSize.x + rightSize.x;
105 if (data is null || !(cast(CLayoutData) data)) { 76 height = bottomSize.y;
106 data = new CLayoutData(); 77 if (bottom !is null && (left !is null || right !is null)) {
107 control.setLayoutData(data); 78 height += CBanner.BORDER_STRIPE + 2;
79 }
80 if (left !is null) {
81 if (right is null) {
82 height += leftSize.y;
83 } else {
84 height += Math.max(leftSize.y, banner.rightMinHeight is DWT.DEFAULT ? rightSize.y : banner.rightMinHeight);
108 } 85 }
109 return (cast(CLayoutData) data).computeSize(control, wHint, hHint, flushCache); 86 } else {
87 height += rightSize.y;
88 }
89 if (showCurve) {
90 width += banner.curve_width - 2*banner.curve_indent;
91 height += CBanner.BORDER_TOP + CBanner.BORDER_BOTTOM + 2*CBanner.BORDER_STRIPE;
110 } 92 }
111 93
112 int computeTrim (Control c) { 94 if (wHint !is DWT.DEFAULT) width = wHint;
113 if (cast(Scrollable) c) { 95 if (hHint !is DWT.DEFAULT) height = hHint;
114 Rectangle rect = (cast(Scrollable) c).computeTrim(0, 0, 0, 0); 96
115 return rect.width; 97 return new Point(width, height);
98 }
99 Point computeChildSize(Control control, int wHint, int hHint, bool flushCache) {
100 Object data = control.getLayoutData();
101 if (data is null || !( null !is cast(CLayoutData)data)) {
102 data = new CLayoutData();
103 control.setLayoutData(data);
104 }
105 return (cast(CLayoutData)data).computeSize(control, wHint, hHint, flushCache);
106 }
107 int computeTrim(Control c) {
108 if ( auto s = cast(Scrollable)c) {
109 Rectangle rect = s.computeTrim (0, 0, 0, 0);
110 return rect.width;
111 }
112 return c.getBorderWidth () * 2;
113 }
114 protected override bool flushCache(Control control) {
115 Object data = control.getLayoutData();
116 if ( auto ld = cast(CLayoutData)data ) ld.flushCache();
117 return true;
118 }
119 protected override void layout(Composite composite, bool flushCache) {
120 CBanner banner = cast(CBanner)composite;
121 Control left = banner.left;
122 Control right = banner.right;
123 Control bottom = banner.bottom;
124
125 Point size = banner.getSize();
126 bool showCurve = left !is null && right !is null;
127 int width = size.x - 2*banner.getBorderWidth();
128 int height = size.y - 2*banner.getBorderWidth();
129
130 Point bottomSize = new Point(0, 0);
131 if (bottom !is null) {
132 int trim = computeTrim(bottom);
133 int w = Math.max(0, width - trim);
134 bottomSize = computeChildSize(bottom, w, DWT.DEFAULT, flushCache);
135 height -= bottomSize.y + CBanner.BORDER_STRIPE + 2;
136 }
137 if (showCurve) height -= CBanner.BORDER_TOP + CBanner.BORDER_BOTTOM + 2*CBanner.BORDER_STRIPE;
138 height = Math.max(0, height);
139 Point rightSize = new Point(0,0);
140 if (right !is null) {
141 int trim = computeTrim(right);
142 int w = DWT.DEFAULT;
143 if (banner.rightWidth !is DWT.DEFAULT) {
144 w = banner.rightWidth - trim;
145 if (left !is null) {
146 w = Math.min(w, width - banner.curve_width + 2* banner.curve_indent - CBanner.MIN_LEFT - trim);
147 }
148 w = Math.max(0, w);
116 } 149 }
117 return c.getBorderWidth() * 2; 150 rightSize = computeChildSize(right, w, DWT.DEFAULT, flushCache);
151 width = width - (rightSize.x - banner.curve_indent + banner.curve_width - banner.curve_indent);
152 }
153 Point leftSize = new Point(0, 0);
154 if (left !is null) {
155 int trim = computeTrim(left);
156 int w = Math.max(0, width - trim);
157 leftSize = computeChildSize(left, w, DWT.DEFAULT, flushCache);
118 } 158 }
119 159
120 protected bool flushCache (Control control) { 160 int x = 0;
121 Object data = control.getLayoutData(); 161 int y = 0;
122 if (data !is null && cast(CLayoutData) data) 162 int oldStart = banner.curveStart;
123 (cast(CLayoutData) data).flushCache(); 163 Rectangle leftRect = null;
124 return true; 164 Rectangle rightRect = null;
165 Rectangle bottomRect = null;
166 if (bottom !is null) {
167 bottomRect = new Rectangle(x, y+size.y-bottomSize.y, bottomSize.x, bottomSize.y);
125 } 168 }
126 169 if (showCurve) y += CBanner.BORDER_TOP + CBanner.BORDER_STRIPE;
127 protected void layout (Composite composite, bool flushCache) { 170 if(left !is null) {
128 CBanner banner = cast(CBanner) composite; 171 leftRect = new Rectangle(x, y, leftSize.x, leftSize.y);
129 Control left = banner.left; 172 banner.curveStart = x + leftSize.x - banner.curve_indent;
130 Control right = banner.right; 173 x += leftSize.x - banner.curve_indent + banner.curve_width - banner.curve_indent;
131 Control bottom = banner.bottom; 174 }
132 175 if (right !is null) {
133 Point size = banner.getSize(); 176 if (left !is null) {
134 bool showCurve = left !is null && right !is null; 177 rightSize.y = Math.max(leftSize.y, banner.rightMinHeight is DWT.DEFAULT ? rightSize.y : banner.rightMinHeight);
135 int width = size.x - 2 * banner.getBorderWidth();
136 int height = size.y - 2 * banner.getBorderWidth();
137
138 Point bottomSize = new Point(0, 0);
139 if (bottom !is null) {
140 int trim = computeTrim(bottom);
141 int w = Math.max(0, width - trim);
142 bottomSize = computeChildSize(bottom, w, DWT.DEFAULT, flushCache);
143 height -= bottomSize.y + CBanner.BORDER_STRIPE + 2;
144 } 178 }
145 if (showCurve) 179 rightRect = new Rectangle(x, y, rightSize.x, rightSize.y);
146 height -= CBanner.BORDER_TOP + CBanner.BORDER_BOTTOM + 2 * CBanner.BORDER_STRIPE;
147 height = Math.max(0, height);
148 Point rightSize = new Point(0, 0);
149 if (right !is null) {
150 int trim = computeTrim(right);
151 int w = DWT.DEFAULT;
152 if (banner.rightWidth !is DWT.DEFAULT) {
153 w = banner.rightWidth - trim;
154 if (left !is null) {
155 w = Math.min(w, width - banner.curve_width + 2 * banner.curve_indent - CBanner.MIN_LEFT - trim);
156 }
157 w = Math.max(0, w);
158 }
159 rightSize = computeChildSize(right, w, DWT.DEFAULT, flushCache);
160 width = width - (rightSize.x - banner.curve_indent + banner.curve_width - banner.curve_indent);
161 }
162 Point leftSize = new Point(0, 0);
163 if (left !is null) {
164 int trim = computeTrim(left);
165 int w = Math.max(0, width - trim);
166 leftSize = computeChildSize(left, w, DWT.DEFAULT, flushCache);
167 }
168
169 int x = 0;
170 int y = 0;
171 int oldStart = banner.curveStart;
172 Rectangle leftRect = null;
173 Rectangle rightRect = null;
174 Rectangle bottomRect = null;
175 if (bottom !is null) {
176 bottomRect = new Rectangle(x, y + size.y - bottomSize.y, bottomSize.x, bottomSize.y);
177 }
178 if (showCurve)
179 y += CBanner.BORDER_TOP + CBanner.BORDER_STRIPE;
180 if (left !is null) {
181 leftRect = new Rectangle(x, y, leftSize.x, leftSize.y);
182 banner.curveStart = x + leftSize.x - banner.curve_indent;
183 x += leftSize.x - banner.curve_indent + banner.curve_width - banner.curve_indent;
184 }
185 if (right !is null) {
186 if (left !is null) {
187 rightSize.y = Math.max(leftSize.y, banner.rightMinHeight is DWT.DEFAULT ? rightSize.y : banner.rightMinHeight);
188 }
189 rightRect = new Rectangle(x, y, rightSize.x, rightSize.y);
190 }
191 if (banner.curveStart < oldStart) {
192 banner.redraw(banner.curveStart - CBanner.CURVE_TAIL, 0, oldStart + banner.curve_width - banner.curveStart + CBanner.CURVE_TAIL + 5,
193 size.y, false);
194 }
195 if (banner.curveStart > oldStart) {
196 banner.redraw(oldStart - CBanner.CURVE_TAIL, 0, banner.curveStart + banner.curve_width - oldStart + CBanner.CURVE_TAIL + 5, size.y, false);
197 }
198 /*
199 * The paint events must be flushed in order to make the curve draw smoothly
200 * while the user drags the divider.
201 * On Windows, it is necessary to flush the paints before the children are
202 * resized because otherwise the children (particularly toolbars) will flash.
203 */
204 banner.update();
205 banner.curveRect = new Rectangle(banner.curveStart, 0, banner.curve_width, size.y);
206 if (bottomRect !is null)
207 bottom.setBounds(bottomRect);
208 if (rightRect !is null)
209 right.setBounds(rightRect);
210 if (leftRect !is null)
211 left.setBounds(leftRect);
212 } 180 }
181 if (banner.curveStart < oldStart) {
182 banner.redraw(banner.curveStart - CBanner.CURVE_TAIL, 0, oldStart + banner.curve_width - banner.curveStart + CBanner.CURVE_TAIL + 5, size.y, false);
183 }
184 if (banner.curveStart > oldStart) {
185 banner.redraw(oldStart - CBanner.CURVE_TAIL, 0, banner.curveStart + banner.curve_width - oldStart + CBanner.CURVE_TAIL + 5, size.y, false);
186 }
187 /*
188 * The paint events must be flushed in order to make the curve draw smoothly
189 * while the user drags the divider.
190 * On Windows, it is necessary to flush the paints before the children are
191 * resized because otherwise the children (particularly toolbars) will flash.
192 */
193 banner.update();
194 banner.curveRect = new Rectangle(banner.curveStart, 0, banner.curve_width, size.y);
195 if (bottomRect !is null) bottom.setBounds(bottomRect);
196 if (rightRect !is null) right.setBounds(rightRect);
197 if (leftRect !is null) left.setBounds(leftRect);
213 } 198 }
199 }