diff options
Diffstat (limited to 'capplets/display/scrollarea.c')
| -rw-r--r-- | capplets/display/scrollarea.c | 190 |
1 files changed, 95 insertions, 95 deletions
diff --git a/capplets/display/scrollarea.c b/capplets/display/scrollarea.c index 89bf6b39..01961443 100644 --- a/capplets/display/scrollarea.c +++ b/capplets/display/scrollarea.c @@ -67,10 +67,10 @@ struct AutoScrollInfo struct FooScrollAreaPrivate { GdkWindow *input_window; - + int width; int height; - + GtkAdjustment *hadj; GtkAdjustment *vadj; @@ -79,16 +79,16 @@ struct FooScrollAreaPrivate int x_offset; int y_offset; - + int min_width; int min_height; GPtrArray *input_regions; - + AutoScrollInfo *auto_scroll_info; - + InputRegion *current_input; - + gboolean grabbed; FooScrollAreaEventFunc grab_func; gpointer grab_data; @@ -144,9 +144,9 @@ static void foo_scroll_area_map (GtkWidget *widget) { FooScrollArea *area = FOO_SCROLL_AREA (widget); - + GTK_WIDGET_CLASS (parent_class)->map (widget); - + if (area->priv->input_window) gdk_window_show (area->priv->input_window); } @@ -155,10 +155,10 @@ static void foo_scroll_area_unmap (GtkWidget *widget) { FooScrollArea *area = FOO_SCROLL_AREA (widget); - + if (area->priv->input_window) gdk_window_hide (area->priv->input_window); - + GTK_WIDGET_CLASS (parent_class)->unmap (widget); } @@ -166,12 +166,12 @@ static void foo_scroll_area_finalize (GObject *object) { FooScrollArea *scroll_area = FOO_SCROLL_AREA (object); - + g_object_unref (scroll_area->priv->hadj); g_object_unref (scroll_area->priv->vadj); - + g_ptr_array_free (scroll_area->priv->input_regions, TRUE); - + g_free (scroll_area->priv); G_OBJECT_CLASS (foo_scroll_area_parent_class)->finalize (object); @@ -234,7 +234,7 @@ foo_scroll_area_class_init (FooScrollAreaClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); - + object_class->finalize = foo_scroll_area_finalize; object_class->set_property = foo_scroll_area_set_property; object_class->get_property = foo_scroll_area_get_property; @@ -271,7 +271,7 @@ foo_scroll_area_class_init (FooScrollAreaClass *class) G_TYPE_NONE, 2, GDK_TYPE_RECTANGLE, GDK_TYPE_RECTANGLE); - + signals[PAINT] = g_signal_new ("paint", G_OBJECT_CLASS_TYPE (object_class), @@ -300,7 +300,7 @@ foo_scroll_area_init (FooScrollArea *scroll_area) gtk_widget_set_has_window (widget, FALSE); gtk_widget_set_redraw_on_allocate (widget, FALSE); - + scroll_area->priv = g_new0 (FooScrollAreaPrivate, 1); scroll_area->priv->width = 0; scroll_area->priv->height = 0; @@ -326,24 +326,24 @@ path_foreach_point (cairo_path_t *path, gpointer user_data) { int i; - + for (i = 0; i < path->num_data; i += path->data[i].header.length) { cairo_path_data_t *data = &(path->data[i]); - + switch (data->header.type) { case CAIRO_PATH_MOVE_TO: case CAIRO_PATH_LINE_TO: func (&(data[1].point.x), &(data[1].point.y), user_data); break; - + case CAIRO_PATH_CURVE_TO: func (&(data[1].point.x), &(data[1].point.y), user_data); func (&(data[2].point.x), &(data[2].point.y), user_data); func (&(data[3].point.x), &(data[3].point.y), user_data); break; - + case CAIRO_PATH_CLOSE_PATH: break; } @@ -413,7 +413,7 @@ clear_exposed_input_region (FooScrollArea *area, allocation_to_canvas (area, &allocation.x, &allocation.y); viewport = cairo_region_create_rectangle (&allocation); cairo_region_subtract (viewport, exposed); - + for (i = 0; i < area->priv->input_regions->len; ++i) { InputRegion *region = area->priv->input_regions->pdata[i]; @@ -511,10 +511,10 @@ foo_scroll_area_get_viewport (FooScrollArea *scroll_area, GdkRectangle *viewport) { g_return_if_fail (FOO_IS_SCROLL_AREA (scroll_area)); - + if (!viewport) return; - + get_viewport (scroll_area, viewport); } @@ -534,7 +534,7 @@ emit_viewport_changed (FooScrollArea *scroll_area, GdkDevice *pointer; int px, py; - g_signal_emit (scroll_area, signals[VIEWPORT_CHANGED], 0, + g_signal_emit (scroll_area, signals[VIEWPORT_CHANGED], 0, new_viewport, old_viewport); if (scroll_area->priv->input_window == NULL) @@ -548,7 +548,7 @@ emit_viewport_changed (FooScrollArea *scroll_area, &px, &py, NULL); - + process_event (scroll_area, FOO_MOTION, px, py); } @@ -570,7 +570,7 @@ set_adjustment_values (FooScrollArea *scroll_area) GtkAdjustment *hadj = scroll_area->priv->hadj; GtkAdjustment *vadj = scroll_area->priv->vadj; - + /* Horizontal */ gtk_widget_get_allocation (GTK_WIDGET (scroll_area), &allocation); g_object_freeze_notify (G_OBJECT (hadj)); @@ -580,7 +580,7 @@ set_adjustment_values (FooScrollArea *scroll_area) gtk_adjustment_set_lower (hadj, 0.0); gtk_adjustment_set_upper (hadj, scroll_area->priv->width); g_object_thaw_notify (G_OBJECT (hadj)); - + /* Vertical */ g_object_freeze_notify (G_OBJECT (vadj)); gtk_adjustment_set_page_size (vadj, allocation.height); @@ -592,7 +592,7 @@ set_adjustment_values (FooScrollArea *scroll_area) clamp_adjustment (hadj); clamp_adjustment (vadj); - + return TRUE; } @@ -608,7 +608,7 @@ foo_scroll_area_realize (GtkWidget *widget) gtk_widget_get_allocation (widget, &widget_allocation); gtk_widget_set_realized (widget, TRUE); - + attributes.window_type = GDK_WINDOW_CHILD; attributes.x = widget_allocation.x; attributes.y = widget_allocation.y; @@ -624,13 +624,13 @@ foo_scroll_area_realize (GtkWidget *widget) GDK_POINTER_MOTION_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); - + attributes_mask = GDK_WA_X | GDK_WA_Y; window = gtk_widget_get_parent_window (widget); gtk_widget_set_window (widget, window); g_object_ref (window); - + area->priv->input_window = gdk_window_new (window, &attributes, attributes_mask); cr = gdk_cairo_create (gtk_widget_get_window (widget)); @@ -639,7 +639,7 @@ foo_scroll_area_realize (GtkWidget *widget) cairo_destroy (cr); gdk_window_set_user_data (area->priv->input_window, area); - + gtk_widget_style_attach (widget); } @@ -647,14 +647,14 @@ static void foo_scroll_area_unrealize (GtkWidget *widget) { FooScrollArea *area = FOO_SCROLL_AREA (widget); - + if (area->priv->input_window) { gdk_window_set_user_data (area->priv->input_window, NULL); gdk_window_destroy (area->priv->input_window); area->priv->input_window = NULL; } - + GTK_WIDGET_CLASS (parent_class)->unrealize (widget); } @@ -692,7 +692,7 @@ create_new_surface (GtkWidget *widget, return new; } - + static void allocation_to_canvas_region (FooScrollArea *area, cairo_region_t *region) @@ -739,7 +739,7 @@ foo_scroll_area_size_allocate (GtkWidget *widget, cairo_region_destroy (invalid); gtk_widget_set_allocation (widget, allocation); - + if (scroll_area->priv->input_window) { cairo_surface_t *new_surface; @@ -752,9 +752,9 @@ foo_scroll_area_size_allocate (GtkWidget *widget, cairo_surface_destroy (scroll_area->priv->surface); scroll_area->priv->surface = new_surface; } - + get_viewport (scroll_area, &new_viewport); - + emit_viewport_changed (scroll_area, &new_viewport, &old_viewport); } @@ -767,17 +767,17 @@ emit_input (FooScrollArea *scroll_area, gpointer data) { FooScrollAreaEvent event; - + if (!func) return; if (type != FOO_MOTION) emit_input (scroll_area, FOO_MOTION, x, y, func, data); - + event.type = type; event.x = x; event.y = y; - + func (scroll_area, &event, data); } @@ -791,7 +791,7 @@ process_event (FooScrollArea *scroll_area, int i; allocation_to_canvas (scroll_area, &x, &y); - + if (scroll_area->priv->grabbed) { emit_input (scroll_area, input_type, x, y, @@ -825,7 +825,7 @@ process_event (FooScrollArea *scroll_area, inside = cairo_in_fill (cr, x, y); cairo_destroy (cr); - + if (inside) { emit_input (scroll_area, input_type, @@ -834,7 +834,7 @@ process_event (FooScrollArea *scroll_area, path->data); return; } - + path = path->next; } @@ -855,7 +855,7 @@ process_gdk_event (FooScrollArea *scroll_area, GdkEvent *event) { FooScrollAreaEventType input_type; - + if (event->type == GDK_BUTTON_PRESS) input_type = FOO_BUTTON_PRESS; else if (event->type == GDK_BUTTON_RELEASE) @@ -864,7 +864,7 @@ process_gdk_event (FooScrollArea *scroll_area, input_type = FOO_MOTION; else return; - + process_event (scroll_area, input_type, x, y); } @@ -873,9 +873,9 @@ foo_scroll_area_button_press (GtkWidget *widget, GdkEventButton *event) { FooScrollArea *area = FOO_SCROLL_AREA (widget); - + process_gdk_event (area, event->x, event->y, (GdkEvent *)event); - + return TRUE; } @@ -884,9 +884,9 @@ foo_scroll_area_button_release (GtkWidget *widget, GdkEventButton *event) { FooScrollArea *area = FOO_SCROLL_AREA (widget); - + process_gdk_event (area, event->x, event->y, (GdkEvent *)event); - + return FALSE; } @@ -895,7 +895,7 @@ foo_scroll_area_motion (GtkWidget *widget, GdkEventMotion *event) { FooScrollArea *area = FOO_SCROLL_AREA (widget); - + process_gdk_event (area, event->x, event->y, (GdkEvent *)event); return TRUE; } @@ -912,7 +912,7 @@ foo_scroll_area_set_size_fixed_y (FooScrollArea *scroll_area, g_object_thaw_notify (G_OBJECT (scroll_area->priv->vadj)); gtk_adjustment_set_value (scroll_area->priv->vadj, new_y); - + set_adjustment_values (scroll_area); g_object_thaw_notify (G_OBJECT (scroll_area->priv->vadj)); } @@ -923,7 +923,7 @@ foo_scroll_area_set_size (FooScrollArea *scroll_area, int height) { g_return_if_fail (FOO_IS_SCROLL_AREA (scroll_area)); - + /* FIXME: Default scroll algorithm should probably be to * keep the same *area* outside the screen as before. * @@ -935,13 +935,13 @@ foo_scroll_area_set_size (FooScrollArea *scroll_area, * Maybe there should be some generic support for those * widgets. Can that even be done? * - * Should we have a version of this function using + * Should we have a version of this function using * fixed points? */ - + scroll_area->priv->width = width; scroll_area->priv->height = height; - + set_adjustment_values (scroll_area); } @@ -977,7 +977,7 @@ foo_scroll_area_get_preferred_height (GtkWidget *widget, static void foo_scroll_area_scroll (FooScrollArea *area, - gint dx, + gint dx, gint dy) { GdkRectangle allocation; @@ -994,7 +994,7 @@ foo_scroll_area_scroll (FooScrollArea *area, src_area.y -= dy; invalid_region = cairo_region_create_rectangle (&allocation); - + if (gdk_rectangle_intersect (&allocation, &src_area, &move_area)) { cairo_region_t *move_region; @@ -1020,17 +1020,17 @@ foo_scroll_area_scroll (FooScrollArea *area, cairo_destroy (cr); gtk_widget_queue_draw (GTK_WIDGET (area)); - + move_region = cairo_region_create_rectangle (&move_area); cairo_region_translate (move_region, dx, dy); cairo_region_subtract (invalid_region, move_region); cairo_region_destroy (move_region); } - + allocation_to_canvas_region (area, invalid_region); foo_scroll_area_invalidate_region (area, invalid_region); - + cairo_region_destroy (invalid_region); } @@ -1042,9 +1042,9 @@ foo_scrollbar_adjustment_changed (GtkAdjustment *adj, gint dx = 0; gint dy = 0; GdkRectangle old_viewport, new_viewport; - + get_viewport (scroll_area, &old_viewport); - + if (adj == scroll_area->priv->hadj) { /* FIXME: do we treat the offset as int or double, and, @@ -1062,14 +1062,14 @@ foo_scrollbar_adjustment_changed (GtkAdjustment *adj, { g_assert_not_reached (); } - + if (gtk_widget_get_realized (widget)) { foo_scroll_area_scroll (scroll_area, -dx, -dy); } - + get_viewport (scroll_area, &new_viewport); - + emit_viewport_changed (scroll_area, &new_viewport, &old_viewport); } @@ -1079,27 +1079,27 @@ set_one_adjustment (FooScrollArea *scroll_area, GtkAdjustment **location) { g_return_if_fail (location != NULL); - + if (adjustment == *location) return; - + if (!adjustment) adjustment = new_adjustment (); - + g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); - + if (*location) { g_signal_handlers_disconnect_by_func ( *location, foo_scrollbar_adjustment_changed, scroll_area); - + g_object_unref (*location); } - + *location = adjustment; - + g_object_ref_sink (*location); - + g_signal_connect (*location, "value_changed", G_CALLBACK (foo_scrollbar_adjustment_changed), scroll_area); @@ -1136,7 +1136,7 @@ foo_scroll_area_set_min_size (FooScrollArea *scroll_area, { scroll_area->priv->min_width = min_width; scroll_area->priv->min_height = min_height; - + /* FIXME: think through invalidation. * * Goals: - no repainting everything on size_allocate(), @@ -1151,7 +1151,7 @@ user_to_device (double *x, double *y, gpointer data) { cairo_t *cr = data; - + cairo_user_to_device (cr, x, y); } @@ -1228,7 +1228,7 @@ canvas_to_window (FooScrollArea *area, { GtkAllocation allocation; GtkWidget *widget = GTK_WIDGET (area); - + gtk_widget_get_allocation (widget, &allocation); cairo_region_translate (region, -area->priv->x_offset + allocation.x, @@ -1263,10 +1263,10 @@ foo_scroll_area_invalidate_region (FooScrollArea *area, if (gtk_widget_get_realized (widget)) { canvas_to_window (area, region); - + gdk_window_invalidate_region (gtk_widget_get_window (widget), region, TRUE); - + window_to_canvas (area, region); } } @@ -1280,7 +1280,7 @@ foo_scroll_area_invalidate_rect (FooScrollArea *scroll_area, { GdkRectangle rect = { x, y, width, height }; cairo_region_t *region; - + g_return_if_fail (FOO_IS_SCROLL_AREA (scroll_area)); region = cairo_region_create_rectangle (&rect); @@ -1297,11 +1297,11 @@ foo_scroll_area_begin_grab (FooScrollArea *scroll_area, { g_return_if_fail (FOO_IS_SCROLL_AREA (scroll_area)); g_return_if_fail (!scroll_area->priv->grabbed); - + scroll_area->priv->grabbed = TRUE; scroll_area->priv->grab_func = func; scroll_area->priv->grab_data = input_data; - + /* FIXME: we should probably take a server grab */ /* Also, maybe there should be support for setting the grab cursor */ } @@ -1310,7 +1310,7 @@ void foo_scroll_area_end_grab (FooScrollArea *scroll_area) { g_return_if_fail (FOO_IS_SCROLL_AREA (scroll_area)); - + scroll_area->priv->grabbed = FALSE; scroll_area->priv->grab_func = NULL; scroll_area->priv->grab_data = NULL; @@ -1354,7 +1354,7 @@ stop_scrolling (FooScrollArea *area) g_source_remove (area->priv->auto_scroll_info->timeout_id); g_timer_destroy (area->priv->auto_scroll_info->timer); g_free (area->priv->auto_scroll_info); - + area->priv->auto_scroll_info = NULL; } } @@ -1367,14 +1367,14 @@ scroll_idle (gpointer data) AutoScrollInfo *info = area->priv->auto_scroll_info; int new_x, new_y; double elapsed; - + get_viewport (area, &viewport); elapsed = g_timer_elapsed (info->timer, NULL); info->res_x = elapsed * info->dx / 0.2; info->res_y = elapsed * info->dy / 0.2; - + new_x = viewport.x + info->res_x; new_y = viewport.y + info->res_y; @@ -1390,11 +1390,11 @@ scroll_idle (gpointer data) info->res_y < -1.0)) { stop_scrolling (area); - + /* stop scrolling if it didn't have an effect */ return FALSE; } - + return TRUE; } @@ -1410,7 +1410,7 @@ ensure_scrolling (FooScrollArea *area, g_idle_add (scroll_idle, area); area->priv->auto_scroll_info->timer = g_timer_new (); } - + area->priv->auto_scroll_info->dx = dx; area->priv->auto_scroll_info->dy = dy; } @@ -1420,9 +1420,9 @@ foo_scroll_area_auto_scroll (FooScrollArea *scroll_area, FooScrollAreaEvent *event) { GdkRectangle viewport; - + get_viewport (scroll_area, &viewport); - + if (rect_contains (&viewport, event->x, event->y)) { stop_scrolling (scroll_area); @@ -1430,9 +1430,9 @@ foo_scroll_area_auto_scroll (FooScrollArea *scroll_area, else { int dx, dy; - + dx = dy = 0; - + if (event->y < viewport.y) { dy = event->y - viewport.y; @@ -1443,7 +1443,7 @@ foo_scroll_area_auto_scroll (FooScrollArea *scroll_area, dy = event->y - (viewport.y + viewport.height - 1); dy = MAX (dy - 2, 0); } - + if (event->x < viewport.x) { dx = event->x - viewport.x; @@ -1454,7 +1454,7 @@ foo_scroll_area_auto_scroll (FooScrollArea *scroll_area, dx = event->x - (viewport.x + viewport.width - 1); dx = MAX (dx - 2, 0); } - + ensure_scrolling (scroll_area, dx, dy); } } |