void ddisplay_add_update(DDisplay *ddisp, const Rectangle *rect) { Rectangle *r; int top,bottom,left,right; Rectangle *visible; int width, height; if (!ddisp->renderer) return; /* can happen at creation time of the diagram */ width = dia_renderer_get_width_pixels (ddisp->renderer); height = dia_renderer_get_height_pixels (ddisp->renderer); if (!rectangle_intersects(rect, &ddisp->visible)) return; /* Temporarily just do a union of all rectangles: */ if (ddisp->update_areas==NULL) { r = g_new(Rectangle,1); *r = *rect; rectangle_intersection(r, &ddisp->visible); ddisp->update_areas = g_slist_prepend(ddisp->update_areas, r); } else { r = (Rectangle *) ddisp->update_areas->data; rectangle_union(r, rect); rectangle_intersection(r, &ddisp->visible); } visible = &ddisp->visible; left = floor( (r->left - visible->left) * (real)width / (visible->right - visible->left) ) - 1; top = floor( (r->top - visible->top) * (real)height / (visible->bottom - visible->top) ) - 1; right = ceil( (r->right - visible->left) * (real)width / (visible->right - visible->left) ) + 1; bottom = ceil( (r->bottom - visible->top) * (real)height / (visible->bottom - visible->top) ) + 1; ddisplay_add_display_area(ddisp, left, top, right, bottom); }
/*! * Called when the widget's window "size, position or stacking" * changes. Needs GDK_STRUCTURE_MASK set. */ static gboolean canvas_configure_event (GtkWidget *widget, GdkEventConfigure *cevent, DDisplay *ddisp) { gboolean new_size = FALSE; int width, height; g_return_val_if_fail (widget == ddisp->canvas, FALSE); if (ddisp->renderer) { width = dia_renderer_get_width_pixels (ddisp->renderer); height = dia_renderer_get_height_pixels (ddisp->renderer); } else { /* We can continue even without a renderer here because * ddisplay_resize_canvas () does the setup for us. */ width = height = 0; } /* Only do this when size is really changing */ if (width != cevent->width || height != cevent->height) { g_print ("Canvas size change...\n"); ddisplay_resize_canvas (ddisp, cevent->width, cevent->height); ddisplay_update_scrollbars(ddisp); /* on resize stop further propagation - does not help */ new_size = TRUE; } /* If the UI is not integrated, resizing should set the resized * window as active. With integrated UI, there is only one window. */ if (is_integrated_ui () == 0) display_set_active(ddisp); /* continue propagation with FALSE */ return new_size; }
void ddisplay_render_pixmap(DDisplay *ddisp, Rectangle *update) { GList *list; DiaObject *obj; int i; DiaInteractiveRendererInterface *renderer; #ifdef TRACES GTimer *timer; #endif if (ddisp->renderer==NULL) { printf("ERROR! Renderer was NULL!!\n"); return; } renderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (ddisp->renderer); /* Erase background */ g_return_if_fail (renderer->fill_pixel_rect != NULL); DIA_RENDERER_GET_CLASS(ddisp->renderer)->begin_render(ddisp->renderer, update); if (update) { int x0, y0, x1, y1; ddisplay_transform_coords (ddisp, update->left, update->top, &x0, &y0); ddisplay_transform_coords (ddisp, update->right, update->bottom, &x1, &y1); renderer->fill_pixel_rect (ddisp->renderer, x0, y0, x1-x0, y1-y0, &ddisp->diagram->data->bg_color); } else renderer->fill_pixel_rect (ddisp->renderer, 0, 0, dia_renderer_get_width_pixels (ddisp->renderer), dia_renderer_get_height_pixels (ddisp->renderer), &ddisp->diagram->data->bg_color); /* Draw grid */ grid_draw(ddisp, update); pagebreak_draw(ddisp, update); #ifdef TRACES timer = g_timer_new(); #endif data_render(ddisp->diagram->data, ddisp->renderer, update, ddisplay_obj_render, (gpointer) ddisp); #ifdef TRACES g_print ("data_render(%g%%) took %g seconds\n", ddisp->zoom_factor * 5.0, g_timer_elapsed (timer, NULL)); g_timer_destroy (timer); #endif /* Draw handles for all selected objects */ list = ddisp->diagram->data->selected; while (list!=NULL) { obj = (DiaObject *) list->data; for (i=0;i<obj->num_handles;i++) { handle_draw(obj->handles[i], ddisp); } list = g_list_next(list); } DIA_RENDERER_GET_CLASS(ddisp->renderer)->end_render(ddisp->renderer); }