diff options
Diffstat (limited to 'liblogdiag/ld-diagram-view.c')
-rw-r--r-- | liblogdiag/ld-diagram-view.c | 240 |
1 files changed, 142 insertions, 98 deletions
diff --git a/liblogdiag/ld-diagram-view.c b/liblogdiag/ld-diagram-view.c index 050a638..704678d 100644 --- a/liblogdiag/ld-diagram-view.c +++ b/liblogdiag/ld-diagram-view.c @@ -148,6 +148,8 @@ struct _LdDiagramViewPrivate GtkAdjustment *adjustment_h; GtkAdjustment *adjustment_v; + GtkScrollablePolicy adjustment_policy_h; + GtkScrollablePolicy adjustment_policy_v; gdouble x; gdouble y; @@ -214,6 +216,10 @@ CheckTerminalsData; enum { PROP_0, + PROP_HADJUSTMENT, + PROP_VADJUSTMENT, + PROP_HSCROLL_POLICY, + PROP_VSCROLL_POLICY, PROP_DIAGRAM, PROP_LIBRARY, PROP_X, @@ -221,14 +227,17 @@ enum PROP_ZOOM }; +static void ld_diagram_view_scrollable_init (GtkScrollableInterface *iface); static void ld_diagram_view_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec); static void ld_diagram_view_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec); static void ld_diagram_view_finalize (GObject *gobject); -static void ld_diagram_view_real_set_scroll_adjustments - (LdDiagramView *self, GtkAdjustment *horizontal, GtkAdjustment *vertical); +static void set_hadjustment + (LdDiagramView *self, GtkAdjustment *hadjustment); +static void set_vadjustment + (LdDiagramView *self, GtkAdjustment *vadjustment); static void on_adjustment_value_changed (GtkAdjustment *adjustment, LdDiagramView *self); static void on_size_allocate (GtkWidget *widget, GtkAllocation *allocation, @@ -360,8 +369,7 @@ static void on_drag_data_received (GtkWidget *widget, GdkDragContext *drag_ctx, static void on_drag_leave (GtkWidget *widget, GdkDragContext *drag_ctx, guint time, gpointer user_data); -static gboolean on_expose_event (GtkWidget *widget, GdkEventExpose *event, - gpointer user_data); +static gboolean on_draw (GtkWidget *widget, cairo_t *cr, gpointer user_data); static void draw_grid (GtkWidget *widget, DrawData *data); static void draw_diagram (GtkWidget *widget, DrawData *data); static void draw_terminal (GtkWidget *widget, DrawData *data); @@ -370,24 +378,27 @@ static void draw_symbol (LdDiagramSymbol *diagram_symbol, DrawData *data); static void draw_connection (LdDiagramConnection *connection, DrawData *data); -G_DEFINE_TYPE (LdDiagramView, ld_diagram_view, GTK_TYPE_DRAWING_AREA); +G_DEFINE_TYPE_WITH_CODE (LdDiagramView, ld_diagram_view, GTK_TYPE_DRAWING_AREA, + G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, + ld_diagram_view_scrollable_init)) + +static void +ld_diagram_view_scrollable_init (GtkScrollableInterface *iface) +{ +} static void ld_diagram_view_class_init (LdDiagramViewClass *klass) { GObjectClass *object_class; - GtkWidgetClass *widget_class; GtkBindingSet *binding_set; GParamSpec *pspec; - widget_class = GTK_WIDGET_CLASS (klass); - object_class = G_OBJECT_CLASS (klass); object_class->get_property = ld_diagram_view_get_property; object_class->set_property = ld_diagram_view_set_property; object_class->finalize = ld_diagram_view_finalize; - klass->set_scroll_adjustments = ld_diagram_view_real_set_scroll_adjustments; klass->cancel_operation = ld_diagram_view_real_cancel_operation; klass->move = ld_diagram_view_real_move; @@ -403,6 +414,16 @@ ld_diagram_view_class_init (LdDiagramViewClass *klass) gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, 0, "move", 2, G_TYPE_DOUBLE, (gdouble) 0, G_TYPE_DOUBLE, (gdouble) 1); + g_object_class_override_property (object_class, + PROP_HADJUSTMENT, "hadjustment"); + g_object_class_override_property (object_class, + PROP_VADJUSTMENT, "vadjustment"); + + g_object_class_override_property (object_class, + PROP_HSCROLL_POLICY, "hscroll-policy"); + g_object_class_override_property (object_class, + PROP_VSCROLL_POLICY, "vscroll-policy"); + /** * LdDiagramView:diagram: * @@ -454,22 +475,6 @@ ld_diagram_view_class_init (LdDiagramViewClass *klass) g_object_class_install_property (object_class, PROP_ZOOM, pspec); /** - * LdDiagramView::set-scroll-adjustments: - * @self: an #LdDiagramView object. - * @horizontal: the horizontal #GtkAdjustment. - * @vertical: the vertical #GtkAdjustment. - * - * Set scroll adjustments for the widget. - */ - widget_class->set_scroll_adjustments_signal = g_signal_new - ("set-scroll-adjustments", G_TYPE_FROM_CLASS (widget_class), - G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, - G_STRUCT_OFFSET (LdDiagramViewClass, set_scroll_adjustments), - NULL, NULL, - ld_marshal_VOID__OBJECT_OBJECT, - G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); - -/** * LdDiagramView::cancel-operation: * @self: an #LdDiagramView object. * @@ -508,6 +513,9 @@ ld_diagram_view_init (LdDiagramView *self) self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, LD_TYPE_DIAGRAM_VIEW, LdDiagramViewPrivate); + self->priv->adjustment_policy_h = GTK_SCROLL_MINIMUM; + self->priv->adjustment_policy_v = GTK_SCROLL_MINIMUM; + self->priv->x = 0; self->priv->y = 0; self->priv->zoom = ZOOM_DEFAULT; @@ -522,8 +530,8 @@ ld_diagram_view_init (LdDiagramView *self) g_signal_connect (self, "size-allocate", G_CALLBACK (on_size_allocate), NULL); - g_signal_connect (self, "expose-event", - G_CALLBACK (on_expose_event), NULL); + g_signal_connect (self, "draw", + G_CALLBACK (on_draw), NULL); g_signal_connect (self, "motion-notify-event", G_CALLBACK (on_motion_notify), NULL); @@ -562,7 +570,8 @@ ld_diagram_view_finalize (GObject *gobject) self = LD_DIAGRAM_VIEW (gobject); - ld_diagram_view_real_set_scroll_adjustments (self, NULL, NULL); + g_object_set (self, "hadjustment", NULL, NULL); + g_object_set (self, "vadjustment", NULL, NULL); if (self->priv->diagram) { @@ -587,6 +596,18 @@ ld_diagram_view_get_property (GObject *object, guint property_id, self = LD_DIAGRAM_VIEW (object); switch (property_id) { + case PROP_HADJUSTMENT: + g_value_set_object (value, self->priv->adjustment_h); + break; + case PROP_VADJUSTMENT: + g_value_set_object (value, self->priv->adjustment_v); + break; + case PROP_HSCROLL_POLICY: + g_value_set_enum (value, self->priv->adjustment_policy_h); + break; + case PROP_VSCROLL_POLICY: + g_value_set_enum (value, self->priv->adjustment_policy_v); + break; case PROP_DIAGRAM: g_value_set_object (value, ld_diagram_view_get_diagram (self)); break; @@ -608,6 +629,77 @@ ld_diagram_view_get_property (GObject *object, guint property_id, } static void +set_hadjustment (LdDiagramView *self, GtkAdjustment *hadjustment) +{ + GtkAllocation allocation; + gdouble scale, page_size; + + /* TODO: Infinite area. */ + + if (hadjustment == self->priv->adjustment_h) + return; + + gtk_widget_get_allocation (GTK_WIDGET (self), &allocation); + scale = ld_diagram_view_get_scale_in_px (self); + + if (self->priv->adjustment_h) + { + g_signal_handlers_disconnect_by_func (self->priv->adjustment_h, + on_adjustment_value_changed, self); + g_object_unref (self->priv->adjustment_h); + self->priv->adjustment_h = NULL; + } + if (hadjustment) + { + g_object_ref (hadjustment); + g_signal_connect (hadjustment, "value-changed", + G_CALLBACK (on_adjustment_value_changed), self); + + page_size = allocation.width / scale; + gtk_adjustment_configure (hadjustment, + -page_size / 2, -100, 100, 0.5, 5, page_size); + + self->priv->adjustment_h = hadjustment; + } +} + +static void +set_vadjustment (LdDiagramView *self, GtkAdjustment *vadjustment) +{ + GtkAllocation allocation; + gdouble scale, page_size; + + /* TODO: Infinite area. */ + + if (vadjustment == self->priv->adjustment_v) + return; + + gtk_widget_get_allocation (GTK_WIDGET (self), &allocation); + scale = ld_diagram_view_get_scale_in_px (self); + + if (self->priv->adjustment_v) + { + g_signal_handlers_disconnect_by_func (self->priv->adjustment_v, + on_adjustment_value_changed, self); + g_object_unref (self->priv->adjustment_v); + + self->priv->adjustment_v = NULL; + } + if (vadjustment) + { + g_object_ref (vadjustment); + g_signal_connect (vadjustment, "value-changed", + G_CALLBACK (on_adjustment_value_changed), self); + + page_size = allocation.height / scale; + gtk_adjustment_configure (vadjustment, + -page_size / 2, -100, 100, 0.5, 5, page_size); + + self->priv->adjustment_v = vadjustment; + } +} + +static void ld_diagram_view_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { @@ -616,6 +708,18 @@ ld_diagram_view_set_property (GObject *object, guint property_id, self = LD_DIAGRAM_VIEW (object); switch (property_id) { + case PROP_HADJUSTMENT: + set_hadjustment (self, g_value_get_object (value)); + break; + case PROP_VADJUSTMENT: + set_vadjustment (self, g_value_get_object (value)); + break; + case PROP_HSCROLL_POLICY: + self->priv->adjustment_policy_h = g_value_get_enum (value); + break; + case PROP_VSCROLL_POLICY: + self->priv->adjustment_policy_v = g_value_get_enum (value); + break; case PROP_DIAGRAM: ld_diagram_view_set_diagram (self, LD_DIAGRAM (g_value_get_object (value))); @@ -639,66 +743,6 @@ ld_diagram_view_set_property (GObject *object, guint property_id, } static void -ld_diagram_view_real_set_scroll_adjustments (LdDiagramView *self, - GtkAdjustment *horizontal, GtkAdjustment *vertical) -{ - /* TODO: Infinite area. */ - GtkAllocation allocation; - gdouble scale, page_size; - - gtk_widget_get_allocation (GTK_WIDGET (self), &allocation); - scale = ld_diagram_view_get_scale_in_px (self); - - if (horizontal != self->priv->adjustment_h) - { - if (self->priv->adjustment_h) - { - g_signal_handlers_disconnect_by_func (self->priv->adjustment_h, - on_adjustment_value_changed, self); - g_object_unref (self->priv->adjustment_h); - - self->priv->adjustment_h = NULL; - } - if (horizontal) - { - g_object_ref (horizontal); - g_signal_connect (horizontal, "value-changed", - G_CALLBACK (on_adjustment_value_changed), self); - - page_size = allocation.width / scale; - gtk_adjustment_configure (horizontal, - -page_size / 2, -100, 100, 0.5, 5, page_size); - - self->priv->adjustment_h = horizontal; - } - } - - if (vertical != self->priv->adjustment_v) - { - if (self->priv->adjustment_v) - { - g_signal_handlers_disconnect_by_func (self->priv->adjustment_v, - on_adjustment_value_changed, self); - g_object_unref (self->priv->adjustment_v); - - self->priv->adjustment_v = NULL; - } - if (vertical) - { - g_object_ref (vertical); - g_signal_connect (vertical, "value-changed", - G_CALLBACK (on_adjustment_value_changed), self); - - page_size = allocation.height / scale; - gtk_adjustment_configure (vertical, - -page_size / 2, -100, 100, 0.5, 5, page_size); - - self->priv->adjustment_v = vertical; - } - } -} - -static void on_adjustment_value_changed (GtkAdjustment *adjustment, LdDiagramView *self) { GtkAllocation allocation; @@ -2563,20 +2607,21 @@ on_drag_drop (GtkWidget *widget, GdkDragContext *drag_ctx, } static gboolean -on_expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer user_data) +on_draw (GtkWidget *widget, cairo_t *cr, gpointer user_data) { DrawData data; - data.cr = gdk_cairo_create (gtk_widget_get_window (widget)); + GdkRectangle draw_area; + if (!gdk_cairo_get_clip_rectangle (cr, &draw_area)) + return FALSE; + + data.cr = cr; data.self = LD_DIAGRAM_VIEW (widget); data.scale = ld_diagram_view_get_scale_in_px (data.self); - data.exposed_rect.x = event->area.x; - data.exposed_rect.y = event->area.y; - data.exposed_rect.width = event->area.width; - data.exposed_rect.height = event->area.height; - - gdk_cairo_rectangle (data.cr, &event->area); - cairo_clip (data.cr); + data.exposed_rect.x = draw_area.x; + data.exposed_rect.y = draw_area.y; + data.exposed_rect.width = draw_area.width; + data.exposed_rect.height = draw_area.height; color_apply (COLOR_GET (data.self, COLOR_BASE), data.cr); cairo_paint (data.cr); @@ -2590,7 +2635,6 @@ on_expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer user_data) if (data.self->priv->operation == OPER_SELECT) oper_select_draw (widget, &data); - cairo_destroy (data.cr); return FALSE; } |