Mercurial > projects > doodle
annotate doodle/gtk/canvas.d @ 28:1754cb773d41
Part-way through getting to compile with configure/builder.
| author | Graham St Jack <graham.stjack@internode.on.net> |
|---|---|
| date | Sun, 02 Aug 2009 16:27:21 +0930 |
| parents | gtk/canvas.d@f3d91579bb28 |
| children | c2f11e1d7470 |
| rev | line source |
|---|---|
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28
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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.tk.events; |
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6 } |
| 0 | 7 |
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8 private { |
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9 import doodle.gtk.conversions; |
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10 import doodle.tk.misc; |
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11 import doodle.cairo.routines; |
| 0 | 12 |
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13 import cairo.Surface; |
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14 |
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15 import std.math; |
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16 import std.stdio; |
| 0 | 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 } |
| 0 | 33 |
| 34 // x and y run right and up respectively | |
| 35 | |
| 10 | 36 class Canvas : Table, Viewport { |
| 11 | 37 this(in Layer[] layers, EventHandler event_handler, in double ppi) { |
| 0 | 38 super(3, 3, 0); |
| 39 | |
| 17 | 40 mDamage = Rectangle.DEFAULT; |
| 41 | |
| 11 | 42 mLayers = layers.dup; |
| 0 | 43 mEventHandler = event_handler; |
| 13 | 44 mPPI = ppi; |
| 0 | 45 |
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46 /* |
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47 writefln("Layer bounds: %s", layer_bounds); |
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48 writefln("Canvas bounds: %s", mCanvasBounds); |
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49 writefln("View centre: %s", mViewCentre); |
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50 */ |
| 0 | 51 |
| 13 | 52 // Create our child widgets and register callbacks |
| 53 | |
| 54 mHRuler = new HRuler; | |
| 0 | 55 attach(mHRuler, |
| 56 1, 2, | |
| 57 0, 1, | |
| 58 AttachOptions.FILL | AttachOptions.EXPAND, AttachOptions.SHRINK, | |
| 59 0, 0); | |
| 20 | 60 mHRuler.setMetric(MetricType.PIXELS); |
| 0 | 61 |
| 13 | 62 mVRuler = new VRuler; |
| 0 | 63 attach(mVRuler, |
| 64 0, 1, | |
| 65 1, 2, | |
| 66 AttachOptions.SHRINK, AttachOptions.FILL | AttachOptions.EXPAND, | |
| 67 0, 0); | |
| 20 | 68 mVRuler.setMetric(MetricType.PIXELS); |
| 0 | 69 |
| 13 | 70 mDrawingArea = new DrawingArea; |
| 27 | 71 mDrawingArea.addOnRealize(&on_realize); |
| 72 mDrawingArea.addOnConfigure(&on_configure); | |
| 73 mDrawingArea.addOnExpose(&on_expose); | |
| 74 mDrawingArea.addOnButtonPress(&on_button_press); | |
| 75 mDrawingArea.addOnButtonRelease(&on_button_release); | |
| 76 mDrawingArea.addOnKeyPress(&on_key_event); | |
| 77 mDrawingArea.addOnKeyRelease(&on_key_event); | |
| 78 mDrawingArea.addOnMotionNotify(&on_motion_notify); | |
| 79 mDrawingArea.addOnScroll(&on_scroll); | |
| 80 mDrawingArea.addOnEnterNotify(&on_enter_notify); | |
| 81 mDrawingArea.addOnLeaveNotify(&on_leave_notify); | |
| 20 | 82 mDrawingArea.setEvents(EventMask.EXPOSURE_MASK | |
| 83 EventMask.POINTER_MOTION_MASK | | |
| 84 EventMask.POINTER_MOTION_HINT_MASK | | |
| 85 EventMask.BUTTON_MOTION_MASK | | |
| 86 EventMask.BUTTON_PRESS_MASK | | |
| 87 EventMask.BUTTON_RELEASE_MASK | | |
| 88 EventMask.KEY_PRESS_MASK | | |
| 89 EventMask.KEY_RELEASE_MASK | | |
| 90 EventMask.ENTER_NOTIFY_MASK | | |
| 91 EventMask.LEAVE_NOTIFY_MASK | | |
| 92 EventMask.FOCUS_CHANGE_MASK | | |
| 93 EventMask.SCROLL_MASK); | |
| 94 | |
| 0 | 95 attach(mDrawingArea, |
| 96 1, 2, | |
| 97 1, 2, | |
| 98 AttachOptions.FILL | AttachOptions.EXPAND, AttachOptions.FILL | AttachOptions.EXPAND, | |
| 99 0, 0); | |
| 100 | |
| 101 // value, lower, upper, step-inc, page-inc, page-size | |
| 102 // Give the adjustments dummy values until we receive a configure | |
| 12 | 103 mHAdjustment = new Adjustment(0.0, 0.0, 1.0, 0.2, 0.5, 0.5); |
| 0 | 104 mHAdjustment.addOnValueChanged(&onValueChanged); |
| 105 mHScrollbar = new HScrollbar(mHAdjustment); | |
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106 mHScrollbar.setInverted(false); |
| 0 | 107 attach(mHScrollbar, |
| 108 1, 2, | |
| 109 2, 3, | |
| 110 AttachOptions.FILL | AttachOptions.EXPAND, AttachOptions.SHRINK, | |
| 111 0, 0); | |
| 112 | |
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113 mVAdjustment = new Adjustment(0.0, 0.0, 1.0, 0.2, 0.5, 0.5); |
| 0 | 114 mVAdjustment.addOnValueChanged(&onValueChanged); |
| 115 mVScrollbar = new VScrollbar(mVAdjustment); | |
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116 mVScrollbar.setInverted(true); |
| 0 | 117 attach(mVScrollbar, |
| 118 2, 3, | |
| 119 1, 2, | |
| 120 AttachOptions.SHRINK, | |
| 121 AttachOptions.FILL | AttachOptions.EXPAND, | |
| 122 0, 0); | |
| 123 } | |
| 124 | |
| 26 | 125 override void zoom_relative(in Point pixel_datum, in double factor) { |
| 0 | 126 // Work out pixel distance from current centre to datum, |
| 127 // Do the zoom, then work out the new centre that keeps the | |
| 128 // pixel distance the same | |
| 129 | |
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130 Point old_model_datum = pixel_to_model(pixel_datum); |
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131 Vector pixel_distance = model_to_pixel(old_model_datum - mViewCentre); |
| 0 | 132 mZoom = clamp_zoom(factor * mZoom); |
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133 mViewCentre = old_model_datum - pixel_to_model(pixel_distance); |
| 0 | 134 |
| 13 | 135 update_adjustments; |
| 136 update_rulers; | |
| 137 queueDraw; | |
| 0 | 138 } |
| 139 | |
| 26 | 140 override void pan_relative(in Vector pixel_displacement) { |
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141 mViewCentre = mViewCentre + pixel_to_model(pixel_displacement); |
| 0 | 142 |
| 13 | 143 update_adjustments; |
| 144 update_rulers; | |
| 145 queueDraw; | |
| 146 } | |
| 147 | |
| 27 | 148 override void set_cursor(in Cursor cursor) { |
| 149 CursorType cursor_type; | |
| 150 | |
| 151 switch (cursor) { | |
| 152 case Cursor.DEFAULT: | |
| 153 cursor_type = CursorType.ARROW; | |
| 154 break; | |
| 155 case Cursor.HAND: | |
| 156 cursor_type = CursorType.HAND1; | |
| 157 break; | |
| 158 case Cursor.CROSSHAIR: | |
| 159 cursor_type = CursorType.CROSSHAIR; | |
| 160 break; | |
| 161 } | |
| 162 | |
| 163 mDrawingArea.setCursor(new gdk.Cursor.Cursor(cursor_type)); | |
| 164 } | |
| 165 | |
| 26 | 166 override void damage_model(in Rectangle area) { |
| 17 | 167 mDamage = mDamage | model_to_pixel(area); |
| 168 } | |
| 169 | |
| 26 | 170 override void damage_pixel(in Rectangle area) { |
| 18 | 171 mDamage = mDamage | area; |
| 172 } | |
| 173 | |
| 0 | 174 private { |
| 175 | |
| 27 | 176 bool on_configure(GdkEventConfigure * event, Widget widget) { |
| 0 | 177 assert(widget is mDrawingArea); |
| 178 | |
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179 if (!mHadConfigure) { |
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180 const double MM_PER_INCH = 25.4; |
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181 mZoom = 0.25 * mPPI / MM_PER_INCH; |
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182 |
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183 // Take the union of the bounds of each layer to |
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184 // determine the canvas size |
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185 |
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186 Rectangle layer_bounds = Rectangle.DEFAULT; |
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187 |
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188 foreach (ref layer; mLayers) { |
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189 layer_bounds = layer_bounds | layer.bounds; |
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190 } |
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191 |
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192 assert(layer_bounds.valid); |
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193 |
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194 mCanvasBounds = layer_bounds.moved(-layer_bounds.size).expanded(2.0 * layer_bounds.size); |
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195 mViewCentre = mCanvasBounds.centre; |
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196 |
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197 mHadConfigure = true; |
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198 } |
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199 |
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200 mViewSize = Vector(cast(double)event.width, cast(double)event.height); |
| 13 | 201 update_adjustments; |
| 202 update_rulers; | |
| 0 | 203 |
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204 //writefln("Canvas bounds: %s", mCanvasBounds); |
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205 //writefln("View centre: %s", mViewCentre); |
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206 |
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207 return true; |
| 0 | 208 } |
| 209 | |
| 27 | 210 bool on_expose(GdkEventExpose * event, Widget widget) { |
| 0 | 211 assert(widget is mDrawingArea); |
| 212 | |
| 13 | 213 Drawable dr = mDrawingArea.getWindow; |
| 0 | 214 |
| 215 int width, height; | |
| 216 dr.getSize(width, height); | |
| 217 //writefln("Got expose %dx%d\n", width, height); | |
| 218 | |
| 12 | 219 scope model_cr = new Context(dr); |
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220 scope pixel_cr = new Context(dr); |
| 12 | 221 |
| 19 | 222 Rectangle pixel_damage = |
| 11 | 223 event is null ? |
| 19 | 224 Rectangle(Point(0.0, 0.0), mViewSize) : |
| 225 Rectangle(Point(cast(double)event.area.x, mViewSize.y - cast(double)(event.area.y + event.area.height)), | |
| 11 | 226 Vector(cast(double)event.area.width, cast(double)event.area.height)); |
| 0 | 227 |
| 19 | 228 Rectangle model_damage = pixel_to_model(pixel_damage); |
| 229 | |
| 230 //writefln("Pixel damage: %s, model damage: %s", pixel_damage, model_damage); | |
| 231 | |
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232 model_cr.save; pixel_cr.save; { |
| 19 | 233 // Setup model context and clip |
| 12 | 234 |
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235 GtkAdjustment * h_gtkAdjustment = mHAdjustment.getAdjustmentStruct; |
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236 GtkAdjustment * v_gtkAdjustment = mVAdjustment.getAdjustmentStruct; |
| 12 | 237 |
| 13 | 238 model_cr.scale(mZoom, -mZoom); |
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239 model_cr.translate(-gtk_adjustment_get_value(h_gtkAdjustment), |
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240 -gtk_adjustment_get_value(v_gtkAdjustment) - gtk_adjustment_get_page_size(v_gtkAdjustment)); |
| 0 | 241 |
| 19 | 242 rectangle(model_cr, model_damage); |
| 243 model_cr.clip; | |
| 244 | |
| 245 // Setup pixel context and clip | |
| 12 | 246 |
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247 pixel_cr.translate(0.0, mViewSize.y); |
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248 pixel_cr.scale(1.0, -1.0); |
| 19 | 249 |
| 250 rectangle(pixel_cr, pixel_damage); | |
| 251 pixel_cr.clip; | |
| 12 | 252 |
| 253 // Fill the background | |
| 254 | |
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255 pixel_cr.save; { |
| 11 | 256 // Make the window light grey |
| 18 | 257 pixel_cr.setSourceRgba(0.6, 0.6, 0.6, 1.0); |
| 19 | 258 rectangle(pixel_cr, pixel_damage); |
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259 pixel_cr.fill; |
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260 } pixel_cr.restore; |
| 12 | 261 |
| 262 // Draw each layer | |
| 0 | 263 |
| 11 | 264 foreach(ref layer; mLayers) { |
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265 model_cr.save; pixel_cr.save; { |
| 19 | 266 layer.draw(this, pixel_damage, pixel_cr, model_damage, model_cr); |
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267 } pixel_cr.restore; model_cr.restore; |
| 11 | 268 } |
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269 } pixel_cr.restore; model_cr.restore; |
| 0 | 270 |
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271 return true; |
| 0 | 272 } |
| 273 | |
| 27 | 274 bool on_button_press(GdkEventButton * event, Widget widget) { |
| 0 | 275 assert(widget is mDrawingArea); |
| 276 //writefln("Got button event\n"); | |
| 277 | |
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278 Point pixel_point = Point(event.x + 0.5, mViewSize.y - (event.y + 0.5)); |
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279 Point model_point = pixel_to_model(pixel_point); |
| 0 | 280 |
| 7 | 281 auto button_event = new ButtonEvent(gtk2tk_button_action(event.type), |
| 282 gtk2tk_button_name(event.button), | |
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283 pixel_point, |
| 0 | 284 model_point, |
| 285 gtk2tk_mask(event.state)); | |
| 286 | |
| 5 | 287 mEventHandler.handle_button_press(this, button_event); |
| 288 | |
| 17 | 289 process_damage; |
| 290 | |
| 5 | 291 return true; |
| 292 } | |
| 293 | |
| 27 | 294 bool on_button_release(GdkEventButton * event, Widget widget) { |
| 5 | 295 assert(widget is mDrawingArea); |
| 296 //writefln("Got button event\n"); | |
| 297 | |
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298 Point pixel_point = Point(event.x + 0.5, mViewSize.y - (event.y + 0.5)); |
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299 Point model_point = pixel_to_model(pixel_point); |
| 5 | 300 |
| 7 | 301 auto button_event = new ButtonEvent(gtk2tk_button_action(event.type), |
| 302 gtk2tk_button_name(event.button), | |
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303 pixel_point, |
| 5 | 304 model_point, |
| 305 gtk2tk_mask(event.state)); | |
| 306 | |
| 307 mEventHandler.handle_button_release(this, button_event); | |
| 0 | 308 |
| 17 | 309 process_damage; |
| 310 | |
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311 return true; |
| 0 | 312 } |
| 313 | |
| 27 | 314 bool on_key_event(GdkEventKey * event, Widget widget) { |
| 0 | 315 assert(widget is mDrawingArea); |
| 316 //writefln("Got key event\n"); | |
| 317 | |
| 318 //auto key_event = new KeyEvent("", | |
| 319 // mEventHandle.handle_key(key_event); | |
| 320 | |
| 17 | 321 process_damage; |
| 322 | |
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323 return true; |
| 0 | 324 } |
| 325 | |
| 27 | 326 bool on_motion_notify(GdkEventMotion * event, Widget widget) { |
| 0 | 327 assert(widget is mDrawingArea); |
| 328 //writefln("Got motion notify\n"); | |
| 329 gtk_widget_event(mHRuler.getWidgetStruct(), cast(GdkEvent *)event); | |
| 330 gtk_widget_event(mVRuler.getWidgetStruct(), cast(GdkEvent *)event); | |
| 331 | |
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332 Point pixel_point = Point(event.x + 0.5, mViewSize.y - (event.y + 0.5)); |
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333 Point model_point = pixel_to_model(pixel_point); |
| 0 | 334 |
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335 auto motion_event = new MotionEvent(pixel_point, |
| 0 | 336 model_point, |
| 337 gtk2tk_mask(event.state)); | |
| 338 | |
| 339 mEventHandler.handle_motion(this, motion_event); | |
| 340 | |
| 17 | 341 process_damage; |
| 342 | |
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343 return true; |
| 0 | 344 } |
| 345 | |
| 27 | 346 bool on_scroll(GdkEventScroll * event, Widget widget) { |
| 0 | 347 assert(widget is mDrawingArea); |
| 348 //writefln("Got scroll\n"); | |
| 349 | |
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350 Point pixel_point = Point(event.x + 0.5, mViewSize.y - (event.y + 0.5)); |
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351 Point model_point = pixel_to_model(pixel_point); |
| 0 | 352 |
| 353 auto scroll_event = new ScrollEvent(gtk2tk_direction(event.direction), | |
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354 pixel_point, |
| 0 | 355 model_point, |
| 356 gtk2tk_mask(event.state)); | |
| 357 | |
| 358 mEventHandler.handle_scroll(this, scroll_event); | |
| 359 | |
| 17 | 360 process_damage; |
| 361 | |
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362 return true; |
| 0 | 363 } |
| 364 | |
| 20 | 365 /* |
| 366 public enum GdkCrossingMode { | |
| 367 NORMAL, | |
| 368 GRAB, | |
| 369 UNGRAB, | |
| 370 GTK_GRAB, | |
| 371 GTK_UNGRAB, | |
| 372 STATE_CHANGED | |
| 373 } | |
| 374 | |
| 375 public struct GdkEventCrossing { | |
| 376 GdkEventType type; | |
| 377 GdkWindow *window; | |
| 378 byte sendEvent; | |
| 379 GdkWindow *subwindow; | |
| 380 uint time; | |
| 381 double x; | |
| 382 double y; | |
| 383 double xRoot; | |
| 384 double yRoot; | |
| 385 GdkCrossingMode mode; | |
| 386 GdkNotifyType detail; | |
| 387 int focus; | |
| 388 uint state; | |
| 389 } | |
| 390 */ | |
| 391 | |
| 27 | 392 bool on_enter_notify(GdkEventCrossing * event, Widget widget) { |
| 20 | 393 assert(widget is mDrawingArea); |
| 27 | 394 //writefln("Enter %d %d %d", cast(int)event.mode, event.focus, event.state); |
| 395 // TODO | |
| 20 | 396 return true; |
| 397 } | |
| 398 | |
| 27 | 399 bool on_leave_notify(GdkEventCrossing * event, Widget widget) { |
| 20 | 400 assert(widget is mDrawingArea); |
| 27 | 401 //writefln("Leave %d %d %d", cast(int)event.mode, event.focus, event.state); |
| 402 // TODO | |
| 20 | 403 return true; |
| 404 } | |
| 405 | |
| 0 | 406 void onValueChanged(Adjustment adjustment) { |
| 13 | 407 GtkAdjustment * h_gtkAdjustment = mHAdjustment.getAdjustmentStruct; |
| 408 GtkAdjustment * v_gtkAdjustment = mVAdjustment.getAdjustmentStruct; | |
| 0 | 409 |
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410 Point view_left_top = Point(gtk_adjustment_get_value(h_gtkAdjustment), |
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411 gtk_adjustment_get_value(v_gtkAdjustment)); |
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412 |
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413 Vector model_size = pixel_to_model(mViewSize); |
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414 |
| 9 | 415 //writefln("%s", view_left_bottom); |
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416 mViewCentre = view_left_top + model_size / 2.0; |
| 19 | 417 //writefln("onValueChanged mViewCentre: %s", mViewCentre); |
| 0 | 418 |
| 13 | 419 update_rulers; |
| 0 | 420 |
| 13 | 421 queueDraw; |
| 0 | 422 } |
| 423 | |
| 424 void update_rulers() { | |
| 26 | 425 invariant Vector model_size = pixel_to_model(mViewSize); |
| 0 | 426 |
| 26 | 427 invariant Point view_left_bottom = mViewCentre - model_size / 2.0; |
| 428 invariant Point view_right_top = mViewCentre + model_size / 2.0; | |
| 0 | 429 |
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430 // Define these just to obtain the position |
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431 // below and we can preserve it |
| 12 | 432 double lower, upper, position, max_size; |
| 433 | |
| 434 mHRuler.getRange(lower, upper, position, max_size); | |
| 0 | 435 mHRuler.setRange(view_left_bottom.x, |
| 436 view_right_top.x, | |
| 12 | 437 position, |
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438 mZoom * 50.0); |
| 12 | 439 |
| 440 mVRuler.getRange(lower, upper, position, max_size); | |
| 0 | 441 mVRuler.setRange(view_right_top.y, |
| 442 view_left_bottom.y, | |
| 14 | 443 position, |
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444 mZoom * 50.0); |
| 0 | 445 } |
| 446 | |
| 447 void update_adjustments() { | |
| 26 | 448 invariant Vector model_size = pixel_to_model(mViewSize); |
| 0 | 449 |
| 26 | 450 invariant Point view_left_bottom = mViewCentre - model_size / 2.0; |
| 451 invariant Point view_right_top = mViewCentre + model_size / 2.0; | |
| 0 | 452 |
| 453 // Adjust the canvas size if necessary | |
| 15 | 454 mCanvasBounds = Rectangle(min_extents(mCanvasBounds.min_corner, view_left_bottom), |
| 455 max_extents(mCanvasBounds.max_corner, view_right_top)); | |
| 0 | 456 |
| 457 // Update the adjustments | |
| 458 | |
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459 GtkAdjustment * h_gtkAdjustment = mHAdjustment.getAdjustmentStruct; |
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460 GtkAdjustment * v_gtkAdjustment = mVAdjustment.getAdjustmentStruct; |
| 0 | 461 |
| 15 | 462 gtk_adjustment_set_lower(h_gtkAdjustment, mCanvasBounds.min_corner.x); |
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463 gtk_adjustment_set_upper(h_gtkAdjustment, mCanvasBounds.max_corner.x); |
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464 gtk_adjustment_set_value(h_gtkAdjustment, view_left_bottom.x); |
| 15 | 465 gtk_adjustment_set_step_increment(h_gtkAdjustment, mCanvasBounds.size.x / 16.0); |
| 466 gtk_adjustment_set_page_increment(h_gtkAdjustment, mCanvasBounds.size.x / 4.0); | |
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467 gtk_adjustment_set_page_size(h_gtkAdjustment, model_size.x); |
| 0 | 468 |
| 15 | 469 gtk_adjustment_set_lower(v_gtkAdjustment, mCanvasBounds.min_corner.y); |
| 470 gtk_adjustment_set_upper(v_gtkAdjustment, mCanvasBounds.max_corner.y); | |
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471 gtk_adjustment_set_value(v_gtkAdjustment, view_left_bottom.y); |
| 15 | 472 gtk_adjustment_set_step_increment(v_gtkAdjustment, mCanvasBounds.size.y / 16.0); |
| 473 gtk_adjustment_set_page_increment(v_gtkAdjustment, mCanvasBounds.size.y / 4.0); | |
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474 gtk_adjustment_set_page_size(v_gtkAdjustment, model_size.y); |
| 0 | 475 |
| 13 | 476 mHAdjustment.changed; |
| 477 mHAdjustment.valueChanged; | |
| 478 mVAdjustment.changed; | |
| 479 mVAdjustment.valueChanged; | |
| 0 | 480 } |
| 481 | |
| 17 | 482 void process_damage() { |
| 483 if (mDamage.valid) { | |
| 18 | 484 //writefln("Damage: %s", mDamage); |
| 17 | 485 int x, y, w, h; |
| 486 mDamage.get_quantised(x, y, w, h); | |
| 27 | 487 mDrawingArea.queueDrawArea(x, cast(int)mViewSize.y - (y + h), w, h); |
| 17 | 488 mDamage = Rectangle.DEFAULT; |
| 489 } | |
| 490 else { | |
| 18 | 491 //writefln("No damage"); |
| 17 | 492 } |
| 493 } | |
| 494 | |
| 26 | 495 double clamp_zoom(in double zoom) { return clamp(zoom, 0.2, 10.0); } |
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496 |
| 27 | 497 Point model_to_pixel(in Point model) const { |
| 498 return Point.DEFAULT + mViewSize / 2.0 + mZoom * (model - mViewCentre); | |
| 499 } | |
| 500 | |
| 501 Point pixel_to_model(in Point pixel) const { | |
| 502 return mViewCentre + (pixel - mViewSize / 2.0 - Point.DEFAULT) / mZoom; | |
| 503 } | |
| 504 | |
| 505 Vector model_to_pixel(in Vector model) const { | |
| 506 return mZoom * model; | |
| 507 } | |
| 508 | |
| 509 Vector pixel_to_model(in Vector pixel) const { | |
| 510 return pixel / mZoom; | |
| 511 } | |
| 512 | |
| 513 Rectangle model_to_pixel(in Rectangle model) const { | |
| 514 return Rectangle(model_to_pixel(model.position), model_to_pixel(model.size)); | |
| 515 } | |
| 516 | |
| 517 Rectangle pixel_to_model(in Rectangle model) const { | |
| 518 return Rectangle(pixel_to_model(model.position), pixel_to_model(model.size)); | |
| 519 } | |
| 520 | |
| 521 void on_realize(Widget widget) { | |
| 522 assert(widget is mDrawingArea); | |
| 523 //writefln("Got realize\n"); | |
| 524 } | |
| 525 | |
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526 bool mHadConfigure; |
| 17 | 527 Rectangle mDamage; // pixels |
| 0 | 528 |
| 529 // Model units are in millimetres | |
| 530 // Screen units are in pixels | |
| 11 | 531 double mZoom; // pixels-per-model-unit (mm) |
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532 Vector mViewSize; // pixel: size of view window in pixels |
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533 Point mViewCentre; // model: where in the model is the centre of our view |
| 15 | 534 Rectangle mCanvasBounds; // model: |
| 0 | 535 |
| 10 | 536 // Child widgets: |
| 0 | 537 HRuler mHRuler; |
| 538 VRuler mVRuler; | |
| 539 DrawingArea mDrawingArea; | |
| 540 Adjustment mHAdjustment; | |
| 541 HScrollbar mHScrollbar; | |
| 542 Adjustment mVAdjustment; | |
| 543 VScrollbar mVScrollbar; | |
| 11 | 544 |
| 545 // Layers: | |
| 546 Layer[] mLayers; | |
| 13 | 547 EventHandler mEventHandler; |
| 548 double mPPI; | |
| 0 | 549 } |
| 550 } |