Mercurial > projects > doodle
annotate doodle/gtk/canvas.d @ 81:d92b9f04b1e8
Bed time
| author | "David Bryant <bagnose@gmail.com>" |
|---|---|
| date | Mon, 16 Aug 2010 00:04:27 +0930 |
| parents | b759414d2b72 |
| children | 0314b2e03f9b |
| rev | line source |
|---|---|
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1 module doodle.gtk.canvas; |
| 0 | 2 |
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3 public { |
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4 import doodle.dia.icanvas; |
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5 import doodle.gtk.events; |
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6 } |
| 0 | 7 |
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8 private { |
| 40 | 9 import doodle.core.logging; |
| 81 | 10 import doodle.tk.screen_model; |
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11 import doodle.dia.layer_stack; |
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12 import doodle.gtk.conversions; |
| 81 | 13 import doodle.gtk.cairo; |
| 0 | 14 |
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15 import cairo.Surface; |
| 81 | 16 import cairo.Context; |
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17 |
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18 import gtk.Widget; |
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19 import gtk.Toolbar; |
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20 import gtk.Table; |
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21 import gtk.HRuler; |
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22 import gtk.VRuler; |
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23 import gtk.Range; |
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24 import gtk.HScrollbar; |
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25 import gtk.VScrollbar; |
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26 import gtk.DrawingArea; |
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27 import gtk.Adjustment; |
| 0 | 28 |
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29 import gdk.Drawable; |
| 0 | 30 |
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31 import gtkc.gtk; |
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32 import gtkc.gtktypes; |
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33 //import gtkc.gdktypes; |
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34 |
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35 import std.math; |
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36 import std.stdio; |
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37 } |
| 0 | 38 |
| 68 | 39 final class Canvas : Table, private IViewport { |
| 69 | 40 this(in Layer[] layers, IEventHandler eventHandler, IGrid grid, in double pixelsPerMillimetre) { |
| 0 | 41 super(3, 3, 0); |
| 42 | |
| 73 | 43 _damageScreen = Rectangle.DEFAULT; |
| 17 | 44 |
| 48 | 45 _eventHandler = eventHandler; |
| 46 _grid = grid; | |
| 69 | 47 _pixelsPerMillimetre = pixelsPerMillimetre; |
| 0 | 48 |
| 79 | 49 _layerStack = new LayerStack(layers); |
| 50 | |
| 13 | 51 // Create our child widgets and register callbacks |
| 52 | |
| 48 | 53 _hRuler = new HRuler; |
| 54 attach(_hRuler, | |
| 0 | 55 1, 2, |
| 56 0, 1, | |
| 57 AttachOptions.FILL | AttachOptions.EXPAND, AttachOptions.SHRINK, | |
| 58 0, 0); | |
| 48 | 59 _hRuler.setMetric(MetricType.PIXELS); |
| 0 | 60 |
| 48 | 61 _vRuler = new VRuler; |
| 62 attach(_vRuler, | |
| 0 | 63 0, 1, |
| 64 1, 2, | |
| 65 AttachOptions.SHRINK, AttachOptions.FILL | AttachOptions.EXPAND, | |
| 66 0, 0); | |
| 48 | 67 _vRuler.setMetric(MetricType.PIXELS); |
| 0 | 68 |
| 48 | 69 _drawingArea = new DrawingArea; |
| 70 _drawingArea.addOnRealize(&onRealize); | |
| 71 _drawingArea.addOnConfigure(&onConfigure); | |
| 72 _drawingArea.addOnExpose(&onExpose); | |
| 81 | 73 _drawingArea.addOnButtonPress(&onButtonPress); |
| 48 | 74 _drawingArea.addOnButtonRelease(&onButtonRelease); |
| 81 | 75 _drawingArea.addOnKeyPress(&onKeyPressEvent); |
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76 _drawingArea.addOnKeyRelease(&onKeyReleaseEvent); |
| 48 | 77 _drawingArea.addOnMotionNotify(&onMotionNotify); |
| 78 _drawingArea.addOnScroll(&onScroll); | |
| 81 | 79 _drawingArea.addOnEnterNotify(&onEnterNotify); |
| 48 | 80 _drawingArea.addOnLeaveNotify(&onLeaveNotify); |
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81 |
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82 _drawingArea.addOnFocusIn(&onFocusIn); |
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83 _drawingArea.addOnFocusOut(&onFocusOut); |
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84 _drawingArea.addOnMoveFocus(&onMoveFocus); |
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85 _drawingArea.addOnGrabBroken(&onGrabBroken); |
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86 _drawingArea.addOnGrabFocus(&onGrabFocus); |
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87 _drawingArea.addOnGrabNotify(&onGrabNotify); |
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88 // addOnPopupMenu |
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89 // addOnQueryTooltip |
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90 // addOnSelection* |
| 48 | 91 _drawingArea.setEvents(EventMask.EXPOSURE_MASK | |
| 20 | 92 EventMask.POINTER_MOTION_MASK | |
| 93 EventMask.POINTER_MOTION_HINT_MASK | | |
| 94 EventMask.BUTTON_MOTION_MASK | | |
| 95 EventMask.BUTTON_PRESS_MASK | | |
| 96 EventMask.BUTTON_RELEASE_MASK | | |
| 97 EventMask.KEY_PRESS_MASK | | |
| 98 EventMask.KEY_RELEASE_MASK | | |
| 99 EventMask.ENTER_NOTIFY_MASK | | |
| 100 EventMask.LEAVE_NOTIFY_MASK | | |
| 101 EventMask.FOCUS_CHANGE_MASK | | |
| 102 EventMask.SCROLL_MASK); | |
| 103 | |
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104 _drawingArea.setCanFocus(true); |
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105 |
| 48 | 106 attach(_drawingArea, |
| 0 | 107 1, 2, |
| 108 1, 2, | |
| 109 AttachOptions.FILL | AttachOptions.EXPAND, AttachOptions.FILL | AttachOptions.EXPAND, | |
| 110 0, 0); | |
| 111 | |
| 112 // value, lower, upper, step-inc, page-inc, page-size | |
| 113 // Give the adjustments dummy values until we receive a configure | |
| 48 | 114 _hAdjustment = new Adjustment(0.0, 0.0, 1.0, 0.2, 0.5, 0.5); |
| 67 | 115 _hAdjustment.addOnValueChanged(&onAdjustmentValueChanged); |
| 48 | 116 _hScrollbar = new HScrollbar(_hAdjustment); |
| 117 _hScrollbar.setInverted(false); | |
| 118 attach(_hScrollbar, | |
| 0 | 119 1, 2, |
| 120 2, 3, | |
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121 AttachOptions.FILL | AttachOptions.EXPAND, |
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122 AttachOptions.SHRINK, |
| 0 | 123 0, 0); |
| 124 | |
| 48 | 125 _vAdjustment = new Adjustment(0.0, 0.0, 1.0, 0.2, 0.5, 0.5); |
| 67 | 126 _vAdjustment.addOnValueChanged(&onAdjustmentValueChanged); |
| 48 | 127 _vScrollbar = new VScrollbar(_vAdjustment); |
| 128 _vScrollbar.setInverted(true); | |
| 129 attach(_vScrollbar, | |
| 0 | 130 2, 3, |
| 131 1, 2, | |
| 132 AttachOptions.SHRINK, | |
| 133 AttachOptions.FILL | AttachOptions.EXPAND, | |
| 134 0, 0); | |
| 79 | 135 |
| 136 _cursors = [ | |
| 137 Cursor.DEFAULT : CursorType.ARROW, | |
| 138 Cursor.HAND : CursorType.HAND1, | |
| 139 Cursor.CROSSHAIR : CursorType.CROSSHAIR, | |
| 140 Cursor.PENCIL : CursorType.PENCIL | |
| 141 ]; | |
| 0 | 142 } |
| 143 | |
| 68 | 144 protected { // XXX the compiler complains about unimplemented methods if this is private |
| 62 | 145 |
| 68 | 146 // IViewport overrides: |
| 0 | 147 |
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148 void zoomRelative(in Point screenDatum, in double factor) { |
| 77 | 149 _screenModel.zoomRelative(factor, screenDatum); |
| 68 | 150 consolidateBounds; |
| 151 updateAdjustments; | |
| 152 updateRulers; | |
| 77 | 153 _grid.zoomChanged(_screenModel.zoom); |
| 68 | 154 queueDraw; |
| 27 | 155 } |
| 156 | |
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157 void panRelative(in Vector screenDisplacement) { |
| 77 | 158 _screenModel.panRelativeScreen(screenDisplacement); |
| 68 | 159 consolidateBounds; |
| 160 updateAdjustments; | |
| 161 updateRulers; | |
| 162 queueDraw; | |
| 163 } | |
| 164 | |
| 165 void setCursor(in Cursor cursor) { | |
| 79 | 166 _drawingArea.setCursor(new gdk.Cursor.Cursor(_cursors[cursor])); |
| 68 | 167 } |
| 168 | |
| 169 void damageModel(in Rectangle area) { | |
| 77 | 170 _damageScreen = _damageScreen | _screenModel.modelToScreen(area); |
| 68 | 171 } |
| 172 | |
| 77 | 173 void damageScreen(in Rectangle area) { |
| 73 | 174 _damageScreen = _damageScreen | area; |
| 68 | 175 } |
| 18 | 176 } |
| 177 | |
| 0 | 178 private { |
| 179 | |
| 77 | 180 void initialiseBounds(in Rectangle viewBoundsScreen) { |
| 79 | 181 Rectangle layerBounds = _layerStack.bounds; |
| 182 Rectangle paddedLayerBounds = growCentre(layerBounds, 2 * layerBounds.size); | |
| 77 | 183 _screenModel = new ScreenModel(0.25 * _pixelsPerMillimetre, paddedLayerBounds, viewBoundsScreen); |
| 184 _grid.zoomChanged(_screenModel.zoom); | |
| 62 | 185 |
| 186 updateAdjustments; | |
| 187 updateRulers; | |
| 188 } | |
| 189 | |
| 190 void consolidateBounds() { | |
| 79 | 191 Rectangle layerBounds = _layerStack.bounds; |
| 192 Rectangle paddedLayerBounds = growCentre(layerBounds, 2 * layerBounds.size); | |
| 77 | 193 _screenModel.consolidateCanvasBounds(paddedLayerBounds); |
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194 |
| 62 | 195 updateAdjustments; |
| 196 updateRulers; | |
| 197 } | |
| 35 | 198 |
| 62 | 199 bool onConfigure(GdkEventConfigure * event, Widget widget) { |
| 200 assert(widget is _drawingArea); | |
| 201 | |
| 77 | 202 Rectangle viewBoundsScreen = Rectangle(Point(0.0, 0.0), Vector(cast(double)event.width, cast(double)event.height)); |
| 79 | 203 if (_screenModel is null) { initialiseBounds(viewBoundsScreen); } |
| 204 else { consolidateBounds; } | |
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205 |
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206 return true; |
| 0 | 207 } |
| 208 | |
| 48 | 209 bool onExpose(GdkEventExpose * event, Widget widget) { |
| 210 assert(widget is _drawingArea); | |
| 0 | 211 |
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212 gdk.Drawable.Drawable dr = _drawingArea.getWindow; |
| 0 | 213 |
| 214 int width, height; | |
| 215 dr.getSize(width, height); | |
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216 //trace("Got expose %dx%d\n", width, height); |
| 0 | 217 |
| 48 | 218 scope modelCr = new Context(dr); |
| 77 | 219 scope screenCr = new Context(dr); |
| 12 | 220 |
| 77 | 221 Rectangle screenDamage = |
| 222 event is null ? _screenModel.viewBoundsScreen : | |
| 223 Rectangle(_screenModel.viewBoundsScreen.position + Vector(cast(double)event.area.x, _screenModel.viewBoundsScreen.h - cast(double)(event.area.y + event.area.height)), | |
| 11 | 224 Vector(cast(double)event.area.width, cast(double)event.area.height)); |
| 0 | 225 |
| 77 | 226 Rectangle modelDamage = _screenModel.screenToModel(screenDamage); |
| 19 | 227 |
| 77 | 228 modelCr.save; screenCr.save; { |
| 67 | 229 { |
| 230 // Setup model context and clip | |
| 77 | 231 modelCr.translate(0.0, _screenModel.viewBoundsScreen.h); |
| 232 modelCr.scale(_screenModel.zoom, -_screenModel.zoom); | |
| 12 | 233 |
| 77 | 234 immutable Point viewLeftBottom = _screenModel.screenToModel(Point(0.0, 0.0)); |
| 67 | 235 modelCr.translate(-viewLeftBottom.x, -viewLeftBottom.y); |
| 0 | 236 |
| 81 | 237 modelCr.rectangle(modelDamage.x0, modelDamage.y0, modelDamage.w, modelDamage.h); |
| 67 | 238 modelCr.clip; |
| 239 } | |
| 12 | 240 |
| 67 | 241 { |
| 77 | 242 // Setup screen context and clip |
| 243 screenCr.translate(0.0, _screenModel.viewBoundsScreen.h); | |
| 244 screenCr.scale(1.0, -1.0); | |
| 19 | 245 |
| 81 | 246 screenCr.rectangle(screenDamage.x0, screenDamage.y0, screenDamage.w, screenDamage.h); |
| 77 | 247 screenCr.clip; |
| 67 | 248 } |
| 12 | 249 |
| 77 | 250 screenCr.save; { |
| 67 | 251 // Fill the background with light grey |
| 77 | 252 screenCr.setSourceRgba(0.9, 0.9, 0.9, 1.0); |
| 81 | 253 screenCr.rectangle(screenDamage.x0, screenDamage.y0, screenDamage.w, screenDamage.h); |
| 77 | 254 screenCr.fill; |
| 255 } screenCr.restore; | |
| 12 | 256 |
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257 _layerStack.draw(screenDamage, new CairoDrawable(screenCr), |
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258 modelDamage, new CairoDrawable(modelCr)); |
| 77 | 259 } screenCr.restore; modelCr.restore; |
| 0 | 260 |
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261 return true; |
| 0 | 262 } |
| 263 | |
| 48 | 264 bool onButtonPress(GdkEventButton * event, Widget widget) { |
| 265 assert(widget is _drawingArea); | |
| 78 | 266 _eventHandler.handleButtonPress(this, makeButtonEvent(event, _screenModel)); |
| 48 | 267 fixDamage; |
| 5 | 268 return true; |
| 269 } | |
| 270 | |
| 48 | 271 bool onButtonRelease(GdkEventButton * event, Widget widget) { |
| 272 assert(widget is _drawingArea); | |
| 78 | 273 _eventHandler.handleButtonRelease(this, makeButtonEvent(event, _screenModel)); |
| 48 | 274 fixDamage; |
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275 return true; |
| 0 | 276 } |
| 277 | |
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278 bool onKeyPressEvent(GdkEventKey * event, Widget widget) { |
| 48 | 279 assert(widget is _drawingArea); |
| 78 | 280 _eventHandler.handleKeyPress(this, makeKeyEvent(event, _screenModel)); |
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281 fixDamage; |
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282 return true; |
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283 } |
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284 |
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285 bool onKeyReleaseEvent(GdkEventKey * event, Widget widget) { |
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286 assert(widget is _drawingArea); |
| 77 | 287 _eventHandler.handleKeyRelease(this, makeKeyEvent(event, _screenModel)); |
| 48 | 288 fixDamage; |
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289 return true; |
| 0 | 290 } |
| 291 | |
| 48 | 292 bool onMotionNotify(GdkEventMotion * event, Widget widget) { |
| 293 assert(widget is _drawingArea); | |
| 73 | 294 |
| 77 | 295 // Pass the events on to the rulers so that they update |
| 296 gtk_widget_event(_hRuler.getWidgetStruct(), cast(GdkEvent *)event); | |
| 297 gtk_widget_event(_vRuler.getWidgetStruct(), cast(GdkEvent *)event); | |
| 0 | 298 |
| 77 | 299 _eventHandler.handleMotion(this, makeMotionEvent(event, _screenModel)); |
| 48 | 300 fixDamage; |
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301 return true; |
| 0 | 302 } |
| 303 | |
| 48 | 304 bool onScroll(GdkEventScroll * event, Widget widget) { |
| 305 assert(widget is _drawingArea); | |
| 77 | 306 _eventHandler.handleScroll(this, makeScrollEvent(event, _screenModel)); |
| 48 | 307 fixDamage; |
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308 return true; |
| 0 | 309 } |
| 310 | |
| 48 | 311 bool onEnterNotify(GdkEventCrossing * event, Widget widget) { |
| 312 assert(widget is _drawingArea); | |
| 77 | 313 _eventHandler.handleEnter(this, makeCrossingEvent(event, _screenModel)); |
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314 fixDamage; |
| 20 | 315 return true; |
| 316 } | |
| 317 | |
| 48 | 318 bool onLeaveNotify(GdkEventCrossing * event, Widget widget) { |
| 319 assert(widget is _drawingArea); | |
| 77 | 320 _eventHandler.handleLeave(this, makeCrossingEvent(event, _screenModel)); |
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321 fixDamage; |
| 20 | 322 return true; |
| 323 } | |
| 324 | |
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325 bool onFocusIn(GdkEventFocus * event, Widget widget) { |
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326 trace("onFocusIn"); |
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327 return true; |
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328 } |
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329 |
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330 bool onFocusOut(GdkEventFocus * event, Widget widget) { |
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331 trace("onFocusOut"); |
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332 return true; |
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333 } |
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334 |
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335 void onMoveFocus(GtkDirectionType direction, Widget widget) { |
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336 trace("onMoveFocus"); |
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337 } |
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338 |
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339 bool onGrabBroken(gdk.Event.Event event, Widget widget) { |
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340 trace("onGrabBroken"); |
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341 return true; |
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342 } |
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343 |
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344 void onGrabFocus(Widget widget) { |
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345 //trace("onGrabFocus"); |
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346 } |
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347 |
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348 void onGrabNotify(gboolean what, Widget widget){ |
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349 trace("onGrabNotify"); |
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350 } |
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351 |
| 67 | 352 void onAdjustmentValueChanged(Adjustment adjustment) { |
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353 GtkAdjustment * hGtkAdjustment = _hAdjustment.getAdjustmentStruct; |
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354 GtkAdjustment * vGtkAdjustment = _vAdjustment.getAdjustmentStruct; |
| 0 | 355 |
| 77 | 356 Point oldViewLeftBottom = _screenModel.screenToModel(Point(0.0, 0.0)); |
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357 Point newViewLeftBottom = Point(gtk_adjustment_get_value(hGtkAdjustment), |
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358 gtk_adjustment_get_value(vGtkAdjustment)); |
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359 |
| 77 | 360 _screenModel.panRelativeModel(newViewLeftBottom - oldViewLeftBottom); |
| 0 | 361 |
| 48 | 362 updateRulers; |
| 13 | 363 queueDraw; |
| 0 | 364 } |
| 365 | |
| 48 | 366 void updateRulers() { |
| 79 | 367 immutable Point viewLeftBottom = _screenModel.screenToModel(_screenModel.viewBoundsScreen.corner0); |
| 77 | 368 immutable Point viewRightTop = _screenModel.screenToModel(_screenModel.viewBoundsScreen.corner1); |
| 0 | 369 |
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370 // Define these just to obtain the position |
| 81 | 371 // below so we can preserve it |
| 48 | 372 double lower, upper, position, maxSize; |
| 12 | 373 |
| 48 | 374 _hRuler.getRange(lower, upper, position, maxSize); |
| 375 _hRuler.setRange(viewLeftBottom.x, | |
| 376 viewRightTop.x, | |
| 12 | 377 position, |
| 77 | 378 _screenModel.zoom * 50.0); |
| 12 | 379 |
| 48 | 380 _vRuler.getRange(lower, upper, position, maxSize); |
| 381 _vRuler.setRange(viewRightTop.y, | |
| 382 viewLeftBottom.y, | |
| 14 | 383 position, |
| 77 | 384 _screenModel.zoom * 50.0); |
| 0 | 385 } |
| 386 | |
| 48 | 387 void updateAdjustments() { |
| 77 | 388 immutable Point viewLeftBottom = _screenModel.screenToModel(Point(0.0, 0.0)); |
| 389 immutable Point viewRightTop = _screenModel.screenToModel(_screenModel.viewBoundsScreen.corner1); | |
| 0 | 390 |
| 79 | 391 // Adjust the canvas size if necessary |
| 77 | 392 _screenModel.canvasAccommodate(Rectangle(viewLeftBottom, viewRightTop)); |
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393 |
| 79 | 394 Rectangle viewBoundsModel = _screenModel.viewBoundsModel; |
| 0 | 395 |
| 396 // Update the adjustments | |
| 397 | |
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398 GtkAdjustment * hGtkAdjustment = _hAdjustment.getAdjustmentStruct; |
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399 GtkAdjustment * vGtkAdjustment = _vAdjustment.getAdjustmentStruct; |
| 0 | 400 |
| 77 | 401 gtk_adjustment_set_lower(hGtkAdjustment, _screenModel.canvasBoundsModel.x0); |
| 402 gtk_adjustment_set_upper(hGtkAdjustment, _screenModel.canvasBoundsModel.x1); | |
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403 gtk_adjustment_set_value(hGtkAdjustment, viewLeftBottom.x); |
| 77 | 404 gtk_adjustment_set_step_increment(hGtkAdjustment, _screenModel.canvasBoundsModel.w / 16.0); |
| 405 gtk_adjustment_set_page_increment(hGtkAdjustment, _screenModel.canvasBoundsModel.w / 4.0); | |
| 79 | 406 gtk_adjustment_set_page_size(hGtkAdjustment, viewBoundsModel.w); |
| 0 | 407 |
| 77 | 408 gtk_adjustment_set_lower(vGtkAdjustment, _screenModel.canvasBoundsModel.y0); |
| 409 gtk_adjustment_set_upper(vGtkAdjustment, _screenModel.canvasBoundsModel.y1); | |
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410 gtk_adjustment_set_value(vGtkAdjustment, viewLeftBottom.y); |
| 77 | 411 gtk_adjustment_set_step_increment(vGtkAdjustment, _screenModel.canvasBoundsModel.h / 16.0); |
| 412 gtk_adjustment_set_page_increment(vGtkAdjustment, _screenModel.canvasBoundsModel.h / 4.0); | |
| 79 | 413 gtk_adjustment_set_page_size(vGtkAdjustment, viewBoundsModel.h); |
| 0 | 414 |
| 48 | 415 _hAdjustment.changed; |
| 416 _hAdjustment.valueChanged; | |
| 417 _vAdjustment.changed; | |
| 418 _vAdjustment.valueChanged; | |
| 0 | 419 } |
| 420 | |
| 48 | 421 void fixDamage() { |
| 73 | 422 if (_damageScreen.valid) { |
| 17 | 423 int x, y, w, h; |
| 73 | 424 _damageScreen.getQuantised(x, y, w, h); |
| 77 | 425 _drawingArea.queueDrawArea(x, cast(int)_screenModel.viewBoundsScreen.h - (y + h), w, h); |
| 73 | 426 _damageScreen = Rectangle.DEFAULT; |
| 17 | 427 } |
| 428 } | |
| 429 | |
| 48 | 430 void onRealize(Widget widget) { |
| 431 assert(widget is _drawingArea); | |
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432 _drawingArea.grabFocus(); |
| 27 | 433 } |
| 434 | |
| 73 | 435 IEventHandler _eventHandler; |
| 436 IGrid _grid; | |
| 437 double _pixelsPerMillimetre; | |
| 79 | 438 LayerStack _layerStack; |
| 439 | |
| 10 | 440 // Child widgets: |
| 73 | 441 HRuler _hRuler; |
| 442 VRuler _vRuler; | |
| 443 DrawingArea _drawingArea; | |
| 444 Adjustment _hAdjustment; | |
| 445 HScrollbar _hScrollbar; | |
| 446 Adjustment _vAdjustment; | |
| 447 VScrollbar _vScrollbar; | |
| 11 | 448 |
| 79 | 449 Rectangle _damageScreen; |
| 77 | 450 ScreenModel _screenModel; |
| 81 | 451 |
| 452 immutable CursorType[Cursor] _cursors; | |
| 0 | 453 } |
| 454 } |