diff options
| -rw-r--r-- | src/ld-canvas.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/src/ld-canvas.c b/src/ld-canvas.c index fdec62b..9ee7d5b 100644 --- a/src/ld-canvas.c +++ b/src/ld-canvas.c @@ -34,16 +34,18 @@ /* Milimetres per inch. */ #define MM_PER_INCH 25.4 +/* The default screen resolution in DPI units. */ +#define DEFAULT_SCREEN_RESOLUTION 96 -/* Tolerance for object borders. */ +/* When requesting drawing, extend all sides of + * the rectangle to be drawn by this number of pixels. + */ +#define QUEUE_DRAW_EXTEND 3 +/* Cursor tolerance for object borders. */ #define OBJECT_BORDER_TOLERANCE 3 - /* Tolerance on all sides of symbols for strokes. */ #define SYMBOL_CLIP_TOLERANCE 5 -/* The default screen resolution in DPI units. */ -#define DEFAULT_SCREEN_RESOLUTION 96 - /* * OperationEnd: * @@ -198,7 +200,8 @@ static gboolean get_object_area (LdCanvas *self, LdDiagramObject *object, LdRectangle *rect); static gboolean object_hit_test (LdCanvas *self, LdDiagramObject *object, gdouble x, gdouble y); -static void queue_object_redraw (LdCanvas *self, LdDiagramObject *object); +static void queue_draw (LdCanvas *self, LdRectangle *rect); +static void queue_object_draw (LdCanvas *self, LdDiagramObject *object); static void ld_canvas_real_cancel_operation (LdCanvas *self); static void ld_canvas_add_object_end (LdCanvas *self); @@ -774,7 +777,7 @@ ld_canvas_add_object_end (LdCanvas *self) data = &OPER_DATA (self, add_object); if (data->object) { - queue_object_redraw (self, data->object); + queue_object_draw (self, data->object); g_object_unref (data->object); data->object = NULL; } @@ -916,7 +919,18 @@ object_hit_test (LdCanvas *self, LdDiagramObject *object, gdouble x, gdouble y) } static void -queue_object_redraw (LdCanvas *self, LdDiagramObject *object) +queue_draw (LdCanvas *self, LdRectangle *rect) +{ + LdRectangle area; + + area = *rect; + ld_rectangle_extend (&area, QUEUE_DRAW_EXTEND); + gtk_widget_queue_draw_area (GTK_WIDGET (self), + area.x, area.y, area.width, area.height); +} + +static void +queue_object_draw (LdCanvas *self, LdDiagramObject *object) { if (LD_IS_DIAGRAM_SYMBOL (object)) { @@ -924,9 +938,7 @@ queue_object_redraw (LdCanvas *self, LdDiagramObject *object) if (!get_symbol_clip_area (self, LD_DIAGRAM_SYMBOL (object), &rect)) return; - gtk_widget_queue_draw_area (GTK_WIDGET (self), - floor (rect.x), floor (rect.y), - ceil (rect.width), ceil (rect.height)); + queue_draw (self, &rect); } } @@ -944,9 +956,9 @@ on_motion_notify (GtkWidget *widget, GdkEventMotion *event, gpointer user_data) data = &OPER_DATA (self, add_object); data->visible = TRUE; - queue_object_redraw (self, data->object); + queue_object_draw (self, data->object); move_object_to_coords (self, data->object, event->x, event->y); - queue_object_redraw (self, data->object); + queue_object_draw (self, data->object); break; } return FALSE; @@ -966,7 +978,7 @@ on_leave_notify (GtkWidget *widget, GdkEventCrossing *event, gpointer user_data) data = &OPER_DATA (self, add_object); data->visible = FALSE; - queue_object_redraw (self, data->object); + queue_object_draw (self, data->object); break; } return FALSE; @@ -988,7 +1000,7 @@ on_button_press (GtkWidget *widget, GdkEventButton *event, gpointer user_data) case OPER_ADD_OBJECT: data = &OPER_DATA (self, add_object); - queue_object_redraw (self, data->object); + queue_object_draw (self, data->object); move_object_to_coords (self, data->object, event->x, event->y); if (self->priv->diagram) |