comparison: ui/gtk/image.c
ui/gtk/image.c
- changeset 532
- 80a6d8923d75
- parent 530
- 7992a44fe719
- child 533
- 951b92ce3708
equal
deleted
inserted
replaced
| 531:9068a5c7caf6 | 532:80a6d8923d75 |
|---|---|
| 79 #endif | 79 #endif |
| 80 | 80 |
| 81 if(args.scrollarea) { | 81 if(args.scrollarea) { |
| 82 toplevel = SCROLLEDWINDOW_NEW(); | 82 toplevel = SCROLLEDWINDOW_NEW(); |
| 83 SCROLLEDWINDOW_SET_CHILD(toplevel, widget); | 83 SCROLLEDWINDOW_SET_CHILD(toplevel, widget); |
| 84 args.adjustsize = TRUE; | 84 args.adjustwidgetsize = TRUE; |
| 85 } else { | 85 } else { |
| 86 toplevel = widget; | 86 toplevel = widget; |
| 87 } | 87 } |
| 88 | 88 |
| 89 UiImageViewer *imgviewer = malloc(sizeof(UiImageViewer)); | 89 UiImageViewer *imgviewer = malloc(sizeof(UiImageViewer)); |
| 97 imgviewer->padding_left = args.image_padding_left; | 97 imgviewer->padding_left = args.image_padding_left; |
| 98 imgviewer->padding_right = args.image_padding_right; | 98 imgviewer->padding_right = args.image_padding_right; |
| 99 imgviewer->padding_top = args.image_padding_top; | 99 imgviewer->padding_top = args.image_padding_top; |
| 100 imgviewer->padding_bottom = args.image_padding_bottom; | 100 imgviewer->padding_bottom = args.image_padding_bottom; |
| 101 } | 101 } |
| 102 imgviewer->adjustsize = args.adjustsize; | 102 imgviewer->adjustwidgetsize = args.adjustwidgetsize; |
| 103 imgviewer->autoscale = args.autoscale; | 103 imgviewer->autoscale = args.autoscale; |
| 104 imgviewer->useradjustable = args.useradjustable; | 104 imgviewer->useradjustable = args.useradjustable; |
| 105 imgviewer->zoom_scale = 20; | 105 imgviewer->zoom_scale = 20; |
| 106 | 106 |
| 107 g_object_set_data_full(G_OBJECT(drawingarea), "uiimageviewer", imgviewer, (GDestroyNotify)imageviewer_destroy); | 107 g_object_set_data_full(G_OBJECT(drawingarea), "uiimageviewer", imgviewer, (GDestroyNotify)imageviewer_destroy); |
| 180 current->container->add(current->container, toplevel, TRUE); | 180 current->container->add(current->container, toplevel, TRUE); |
| 181 | 181 |
| 182 return toplevel; | 182 return toplevel; |
| 183 } | 183 } |
| 184 | 184 |
| 185 static void imageviewer_reset(UiImageViewer *imgviewer) { | |
| 186 imgviewer->zoom = 0; | |
| 187 imgviewer->isautoscaled = FALSE; | |
| 188 imgviewer->transx = 0; | |
| 189 imgviewer->transy; | |
| 190 imgviewer->begin_transx = 0; | |
| 191 imgviewer->begin_transy = 0; | |
| 192 imgviewer->scale = 1; | |
| 193 } | |
| 194 | |
| 195 UIWIDGET ui_imageviewer_reset(UIWIDGET w) { | |
| 196 UiImageViewer *imgviewer = g_object_get_data(G_OBJECT(w), "uiimageviewer"); | |
| 197 if(imgviewer) { | |
| 198 imageviewer_reset(imgviewer); | |
| 199 gtk_widget_queue_draw(w); | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 UIWIDGET ui_imageviewer_set_autoscale(UIWIDGET w, UiBool set) { | |
| 204 UiImageViewer *imgviewer = g_object_get_data(G_OBJECT(w), "uiimageviewer"); | |
| 205 if(imgviewer) { | |
| 206 imgviewer->autoscale = set; | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 UIWIDGET ui_imageviewer_set_adjustwidgetsize(UIWIDGET w, UiBool set) { | |
| 211 UiImageViewer *imgviewer = g_object_get_data(G_OBJECT(w), "uiimageviewer"); | |
| 212 if(imgviewer) { | |
| 213 imgviewer->adjustwidgetsize = set; | |
| 214 } | |
| 215 } | |
| 216 | |
| 217 UIWIDGET ui_imageviewer_set_useradjustable(UIWIDGET w, UiBool set) { | |
| 218 UiImageViewer *imgviewer = g_object_get_data(G_OBJECT(w), "uiimageviewer"); | |
| 219 if(imgviewer) { | |
| 220 imgviewer->useradjustable = set; | |
| 221 } | |
| 222 } | |
| 185 | 223 |
| 186 void ui_cairo_draw_image(UiImageViewer *imgviewer, cairo_t *cr, int width, int height) { | 224 void ui_cairo_draw_image(UiImageViewer *imgviewer, cairo_t *cr, int width, int height) { |
| 187 if(!imgviewer->pixbuf) { | 225 if(!imgviewer->pixbuf) { |
| 188 return; | 226 return; |
| 189 } | 227 } |
| 193 double dpixheight = (double)gdk_pixbuf_get_height(pixbuf); | 231 double dpixheight = (double)gdk_pixbuf_get_height(pixbuf); |
| 194 | 232 |
| 195 double dwidth = width; | 233 double dwidth = width; |
| 196 double dheight = height; | 234 double dheight = height; |
| 197 double scale = 1; | 235 double scale = 1; |
| 198 if(imgviewer->autoscale) { | 236 // if autoscale is enabled, scale the image to fill available space |
| 199 scale = dwidth / dpixwidth; | 237 // if useradjustable is also enabled, the autoscaling is only done once |
| 200 if(dpixheight * scale > dheight) { | 238 if(imgviewer->autoscale && imgviewer->scale != 0) { |
| 201 scale = dheight / dpixheight; | 239 if(!imgviewer->isautoscaled) { |
| 240 scale = dwidth / dpixwidth; | |
| 241 if(dpixheight * scale > dheight) { | |
| 242 scale = dheight / dpixheight; | |
| 243 } | |
| 244 | |
| 245 if(imgviewer->useradjustable) { | |
| 246 imgviewer->isautoscaled = TRUE; | |
| 247 } | |
| 248 | |
| 249 imgviewer->scale = scale; | |
| 250 } else { | |
| 251 scale = imgviewer->scale; | |
| 202 } | 252 } |
| 203 } else { | 253 } else { |
| 254 // user-adjusted scaling | |
| 204 scale = 1 + ((double)imgviewer->zoom / (double)imgviewer->zoom_scale); | 255 scale = 1 + ((double)imgviewer->zoom / (double)imgviewer->zoom_scale); |
| 205 } | 256 } |
| 206 | 257 |
| 207 dpixwidth *= scale; | 258 dpixwidth *= scale; |
| 208 dpixheight *= scale; | 259 dpixheight *= scale; |
| 215 cairo_translate(cr, x, y); | 266 cairo_translate(cr, x, y); |
| 216 cairo_scale(cr, scale, scale); | 267 cairo_scale(cr, scale, scale); |
| 217 | 268 |
| 218 gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0); | 269 gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0); |
| 219 cairo_paint(cr); | 270 cairo_paint(cr); |
| 220 | |
| 221 imgviewer->prev_scale = scale; | |
| 222 } | 271 } |
| 223 | 272 |
| 224 void* ui_imageviewer_get(UiGeneric *g) { | 273 void* ui_imageviewer_get(UiGeneric *g) { |
| 225 UiImageViewer *imgviewer = g->obj; | 274 UiImageViewer *imgviewer = g->obj; |
| 226 g->value = imgviewer->pixbuf; | 275 g->value = imgviewer->pixbuf; |
| 239 GdkPixbuf *pixbuf = value; | 288 GdkPixbuf *pixbuf = value; |
| 240 | 289 |
| 241 UiImageViewer *imgviewer = g->obj; | 290 UiImageViewer *imgviewer = g->obj; |
| 242 g->value = pixbuf; | 291 g->value = pixbuf; |
| 243 | 292 |
| 293 imageviewer_reset(imgviewer); | |
| 294 | |
| 244 if(imgviewer->pixbuf) { | 295 if(imgviewer->pixbuf) { |
| 245 g_object_unref(imgviewer->pixbuf); | 296 g_object_unref(imgviewer->pixbuf); |
| 246 } | 297 } |
| 247 imgviewer->pixbuf = pixbuf; | 298 imgviewer->pixbuf = pixbuf; |
| 248 | 299 |
| 249 if(imgviewer->adjustsize) { | 300 if(imgviewer->adjustwidgetsize && !imgviewer->autoscale) { |
| 250 int width = gdk_pixbuf_get_width(pixbuf); | 301 int width = gdk_pixbuf_get_width(pixbuf); |
| 251 int height = gdk_pixbuf_get_height(pixbuf); | 302 int height = gdk_pixbuf_get_height(pixbuf); |
| 252 gtk_widget_set_size_request(imgviewer->widget, width, height); | 303 gtk_widget_set_size_request(imgviewer->widget, width, height); |
| 253 } | 304 } |
| 254 gtk_widget_queue_draw(imgviewer->widget); | 305 gtk_widget_queue_draw(imgviewer->widget); |
| 286 if(imgviewer->useradjustable) { | 337 if(imgviewer->useradjustable) { |
| 287 imgviewer->zoom -= dy; | 338 imgviewer->zoom -= dy; |
| 288 if(imgviewer->zoom < -imgviewer->zoom_scale) { | 339 if(imgviewer->zoom < -imgviewer->zoom_scale) { |
| 289 imgviewer->zoom = -imgviewer->zoom_scale; | 340 imgviewer->zoom = -imgviewer->zoom_scale; |
| 290 } | 341 } |
| 342 imgviewer->scale = 0; // disable autoscale | |
| 291 gtk_widget_queue_draw(imgviewer->widget); | 343 gtk_widget_queue_draw(imgviewer->widget); |
| 292 return TRUE; | 344 return TRUE; |
| 293 } | 345 } |
| 294 return FALSE; | 346 return FALSE; |
| 295 } | 347 } |
