forked from AuroraMiddleware/gtk
9b9cc2f947
In wayland, popup positioning and event handling are doubly async. This makes it unreliable to figure out parent surface coordinates out of the popup position and the events received. This results in jumpy text handles there. The best way to deal with parent surface coordinates is to handle the events there. Make the handles transparent to input, and make the drag gesture be set up on the parent widget's native. The gesture is set up in the capture phase, setting it on the native (as opposed to the parent widget) achieves a feeling similar to it being a distinct surface, as it should take precedence over other gestures in the emission chain (e.g. scrolledwindows). As everything is in parent widget's native's coordinates, the drag handles become smooth again.
569 lines
17 KiB
C
569 lines
17 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright © 2012 Carlos Garnacho <carlosg@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkprivatetypebuiltins.h"
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#include "gtktexthandleprivate.h"
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#include "gtkmarshalers.h"
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#include "gtkprivate.h"
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#include "gtkwindowprivate.h"
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#include "gtkwidgetprivate.h"
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#include "gtkrendericonprivate.h"
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#include "gtkcssboxesimplprivate.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtknativeprivate.h"
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#include "gtkintl.h"
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#include <gtk/gtk.h>
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enum {
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DRAG_STARTED,
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HANDLE_DRAGGED,
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DRAG_FINISHED,
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LAST_SIGNAL
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};
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struct _GtkTextHandle
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{
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GtkWidget parent_instance;
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GdkSurface *surface;
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GskRenderer *renderer;
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GtkEventController *controller;
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GtkWidget *controller_widget;
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GdkRectangle pointing_to;
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GtkBorder border;
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int dx;
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int dy;
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guint role : 2;
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guint dragged : 1;
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guint mode_visible : 1;
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guint user_visible : 1;
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guint has_point : 1;
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};
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static void gtk_text_handle_native_interface_init (GtkNativeInterface *iface);
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static void handle_drag_begin (GtkGestureDrag *gesture,
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double x,
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double y,
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GtkTextHandle *handle);
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static void handle_drag_update (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkWidget *widget);
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static void handle_drag_end (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkTextHandle *handle);
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G_DEFINE_TYPE_WITH_CODE (GtkTextHandle, gtk_text_handle, GTK_TYPE_WIDGET,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_NATIVE,
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gtk_text_handle_native_interface_init))
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static guint signals[LAST_SIGNAL] = { 0 };
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static GdkSurface *
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gtk_text_handle_native_get_surface (GtkNative *native)
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{
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return GTK_TEXT_HANDLE (native)->surface;
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}
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static GskRenderer *
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gtk_text_handle_native_get_renderer (GtkNative *native)
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{
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return GTK_TEXT_HANDLE (native)->renderer;
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}
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static void
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gtk_text_handle_native_get_surface_transform (GtkNative *native,
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double *x,
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double *y)
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{
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GtkCssBoxes css_boxes;
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const graphene_rect_t *margin_rect;
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gtk_css_boxes_init (&css_boxes, GTK_WIDGET (native));
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margin_rect = gtk_css_boxes_get_margin_rect (&css_boxes);
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*x = - margin_rect->origin.x;
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*y = - margin_rect->origin.y;
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}
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static void
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gtk_text_handle_get_padding (GtkTextHandle *handle,
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GtkBorder *border)
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{
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GtkWidget *widget = GTK_WIDGET (handle);
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GtkStyleContext *context;
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context = gtk_widget_get_style_context (widget);
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border->left = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_LEFT), 100);
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border->right = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_RIGHT), 100);
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border->top = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_TOP), 100);
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border->bottom = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_BOTTOM), 100);
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}
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static void
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gtk_text_handle_present_surface (GtkTextHandle *handle)
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{
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GtkWidget *widget = GTK_WIDGET (handle);
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GdkPopupLayout *layout;
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GdkRectangle rect;
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GtkRequisition req;
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GtkWidget *parent;
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gtk_widget_get_preferred_size (widget, NULL, &req);
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gtk_text_handle_get_padding (handle, &handle->border);
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parent = gtk_widget_get_parent (widget);
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gtk_widget_get_surface_allocation (parent, &rect);
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rect.x += handle->pointing_to.x;
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rect.y += handle->pointing_to.y + handle->pointing_to.height - handle->border.top;
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rect.width = req.width - handle->border.left - handle->border.right;
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rect.height = 1;
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if (handle->role == GTK_TEXT_HANDLE_ROLE_CURSOR)
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rect.x -= rect.width / 2;
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else if ((handle->role == GTK_TEXT_HANDLE_ROLE_SELECTION_END &&
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gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ||
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(handle->role == GTK_TEXT_HANDLE_ROLE_SELECTION_START &&
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gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL))
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rect.x -= rect.width;
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layout = gdk_popup_layout_new (&rect,
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GDK_GRAVITY_SOUTH,
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GDK_GRAVITY_NORTH);
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gdk_popup_layout_set_anchor_hints (layout,
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GDK_ANCHOR_FLIP_Y | GDK_ANCHOR_SLIDE_X);
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gdk_popup_present (GDK_POPUP (handle->surface),
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MAX (req.width, 1),
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MAX (req.height, 1),
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layout);
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gdk_popup_layout_unref (layout);
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gtk_widget_allocate (widget,
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gdk_surface_get_width (handle->surface),
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gdk_surface_get_height (handle->surface),
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-1, NULL);
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}
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static void
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gtk_text_handle_native_check_resize (GtkNative *native)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (native);
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GtkWidget *widget = GTK_WIDGET (native);
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if (!_gtk_widget_get_alloc_needed (widget))
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gtk_widget_ensure_allocate (widget);
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else if (gtk_widget_get_visible (widget))
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gtk_text_handle_present_surface (handle);
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}
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static void
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gtk_text_handle_native_interface_init (GtkNativeInterface *iface)
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{
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iface->get_surface = gtk_text_handle_native_get_surface;
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iface->get_renderer = gtk_text_handle_native_get_renderer;
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iface->get_surface_transform = gtk_text_handle_native_get_surface_transform;
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iface->check_resize = gtk_text_handle_native_check_resize;
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}
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static gboolean
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surface_render (GdkSurface *surface,
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cairo_region_t *region,
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GtkTextHandle *handle)
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{
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gtk_widget_render (GTK_WIDGET (handle), surface, region);
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return TRUE;
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}
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static void
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surface_mapped_changed (GtkWidget *widget)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (widget);
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gtk_widget_set_visible (widget, gdk_surface_get_mapped (handle->surface));
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}
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static void
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gtk_text_handle_snapshot (GtkWidget *widget,
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GtkSnapshot *snapshot)
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{
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GtkCssStyle *style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
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gtk_css_style_snapshot_icon (style,
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snapshot,
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gtk_widget_get_width (widget),
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gtk_widget_get_height (widget));
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}
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static void
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gtk_text_handle_realize (GtkWidget *widget)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (widget);
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GdkSurface *parent_surface;
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GtkWidget *parent;
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parent = gtk_widget_get_parent (widget);
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parent_surface = gtk_native_get_surface (gtk_widget_get_native (parent));
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handle->surface = gdk_surface_new_popup (parent_surface, FALSE);
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gdk_surface_set_widget (handle->surface, widget);
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gdk_surface_set_input_region (handle->surface, cairo_region_create ());
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g_signal_connect_swapped (handle->surface, "notify::mapped",
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G_CALLBACK (surface_mapped_changed), widget);
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g_signal_connect (handle->surface, "render", G_CALLBACK (surface_render), widget);
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GTK_WIDGET_CLASS (gtk_text_handle_parent_class)->realize (widget);
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handle->renderer = gsk_renderer_new_for_surface (handle->surface);
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}
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static void
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gtk_text_handle_unrealize (GtkWidget *widget)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (widget);
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GTK_WIDGET_CLASS (gtk_text_handle_parent_class)->unrealize (widget);
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gsk_renderer_unrealize (handle->renderer);
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g_clear_object (&handle->renderer);
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g_signal_handlers_disconnect_by_func (handle->surface, surface_render, widget);
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g_signal_handlers_disconnect_by_func (handle->surface, surface_mapped_changed, widget);
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gdk_surface_set_widget (handle->surface, NULL);
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gdk_surface_destroy (handle->surface);
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g_clear_object (&handle->surface);
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}
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static void
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text_handle_set_up_gesture (GtkTextHandle *handle)
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{
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GtkNative *native;
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/* The drag gesture is hooked on the parent native */
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native = gtk_widget_get_native (gtk_widget_get_parent (GTK_WIDGET (handle)));
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handle->controller_widget = GTK_WIDGET (native);
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handle->controller = GTK_EVENT_CONTROLLER (gtk_gesture_drag_new ());
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gtk_event_controller_set_propagation_phase (handle->controller,
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GTK_PHASE_CAPTURE);
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g_signal_connect (handle->controller, "drag-begin",
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G_CALLBACK (handle_drag_begin), handle);
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g_signal_connect (handle->controller, "drag-update",
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G_CALLBACK (handle_drag_update), handle);
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g_signal_connect (handle->controller, "drag-end",
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G_CALLBACK (handle_drag_end), handle);
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gtk_widget_add_controller (handle->controller_widget, handle->controller);
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}
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static void
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gtk_text_handle_map (GtkWidget *widget)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (widget);
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GTK_WIDGET_CLASS (gtk_text_handle_parent_class)->map (widget);
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if (handle->has_point)
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{
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gtk_text_handle_present_surface (handle);
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text_handle_set_up_gesture (handle);
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}
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}
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static void
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gtk_text_handle_unmap (GtkWidget *widget)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (widget);
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GTK_WIDGET_CLASS (gtk_text_handle_parent_class)->unmap (widget);
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gdk_surface_hide (handle->surface);
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if (handle->controller_widget)
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{
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gtk_widget_remove_controller (handle->controller_widget,
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handle->controller);
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handle->controller_widget = NULL;
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handle->controller = NULL;
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}
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}
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static void
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gtk_text_handle_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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*natural = 0;
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*minimum = 0;
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*minimum_baseline = -1;
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*natural_baseline = -1;
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}
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static void
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gtk_text_handle_class_init (GtkTextHandleClass *klass)
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{
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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widget_class->snapshot = gtk_text_handle_snapshot;
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widget_class->realize = gtk_text_handle_realize;
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widget_class->unrealize = gtk_text_handle_unrealize;
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widget_class->map = gtk_text_handle_map;
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widget_class->unmap = gtk_text_handle_unmap;
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widget_class->measure = gtk_text_handle_measure;
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signals[HANDLE_DRAGGED] =
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g_signal_new (I_("handle-dragged"),
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST, 0,
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NULL, NULL,
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_gtk_marshal_VOID__INT_INT,
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G_TYPE_NONE, 2,
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G_TYPE_INT, G_TYPE_INT);
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signals[DRAG_STARTED] =
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g_signal_new (I_("drag-started"),
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST, 0,
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 0, G_TYPE_NONE);
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signals[DRAG_FINISHED] =
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g_signal_new (I_("drag-finished"),
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST, 0,
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 0, G_TYPE_NONE);
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gtk_widget_class_set_css_name (widget_class, I_("cursor-handle"));
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}
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/* Relative to pointing_to x/y */
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static void
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handle_get_input_extents (GtkTextHandle *handle,
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GtkBorder *border)
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{
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GtkWidget *widget = GTK_WIDGET (handle);
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if (handle->role == GTK_TEXT_HANDLE_ROLE_CURSOR)
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{
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border->left = (-gtk_widget_get_width (widget) / 2) - handle->border.left;
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border->right = (gtk_widget_get_width (widget) / 2) + handle->border.right;
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}
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else if ((handle->role == GTK_TEXT_HANDLE_ROLE_SELECTION_END &&
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gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ||
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(handle->role == GTK_TEXT_HANDLE_ROLE_SELECTION_START &&
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gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL))
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{
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border->left = -gtk_widget_get_width (widget) - handle->border.left;
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border->right = handle->border.right;
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}
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else
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{
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border->left = -handle->border.left;
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border->right = gtk_widget_get_width (widget) + handle->border.right;
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}
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border->top = - handle->border.top;
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border->bottom = gtk_widget_get_height (widget) + handle->border.bottom;
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}
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static void
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handle_drag_begin (GtkGestureDrag *gesture,
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double x,
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double y,
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GtkTextHandle *handle)
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{
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GtkBorder input_extents;
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double widget_x, widget_y;
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x -= handle->pointing_to.x;
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y -= handle->pointing_to.y;
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/* Figure out if the coordinates fall into the handle input area, coordinates
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* are relative to the parent widget.
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*/
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handle_get_input_extents (handle, &input_extents);
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gtk_widget_translate_coordinates (handle->controller_widget,
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gtk_widget_get_parent (GTK_WIDGET (handle)),
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x, y, &widget_x, &widget_y);
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if (widget_x < input_extents.left || widget_x >= input_extents.right ||
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widget_y < input_extents.top || widget_y >= input_extents.bottom)
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{
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
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return;
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}
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
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/* Store untranslated coordinates here, so ::update does not need
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* an extra translation
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*/
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handle->dx = x;
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handle->dy = y;
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handle->dragged = TRUE;
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g_signal_emit (handle, signals[DRAG_STARTED], 0);
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}
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static void
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handle_drag_update (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkWidget *widget)
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{
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GtkTextHandle *handle = GTK_TEXT_HANDLE (widget);
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double start_x, start_y;
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int x, y;
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gtk_gesture_drag_get_start_point (gesture, &start_x, &start_y);
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x = start_x + offset_x - handle->dx;
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y = start_y + offset_y - handle->dy;
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g_signal_emit (widget, signals[HANDLE_DRAGGED], 0, x, y);
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}
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static void
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handle_drag_end (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkTextHandle *handle)
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{
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GdkEventSequence *sequence;
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GtkEventSequenceState state;
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sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
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state = gtk_gesture_get_sequence_state (GTK_GESTURE (gesture), sequence);
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if (state == GTK_EVENT_SEQUENCE_CLAIMED)
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g_signal_emit (handle, signals[DRAG_FINISHED], 0);
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handle->dragged = FALSE;
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}
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static void
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gtk_text_handle_update_for_role (GtkTextHandle *handle)
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{
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GtkWidget *widget = GTK_WIDGET (handle);
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if (handle->role == GTK_TEXT_HANDLE_ROLE_CURSOR)
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{
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gtk_widget_remove_css_class (widget, "top");
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gtk_widget_add_css_class (widget, "bottom");
|
|
gtk_widget_add_css_class (widget, "insertion-cursor");
|
|
}
|
|
else if (handle->role == GTK_TEXT_HANDLE_ROLE_SELECTION_END)
|
|
{
|
|
gtk_widget_remove_css_class (widget, "top");
|
|
gtk_widget_add_css_class (widget, "bottom");
|
|
gtk_widget_remove_css_class (widget, "insertion-cursor");
|
|
}
|
|
else if (handle->role == GTK_TEXT_HANDLE_ROLE_SELECTION_START)
|
|
{
|
|
gtk_widget_add_css_class (widget, "top");
|
|
gtk_widget_remove_css_class (widget, "bottom");
|
|
gtk_widget_remove_css_class (widget, "insertion-cursor");
|
|
}
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
|
|
static void
|
|
gtk_text_handle_init (GtkTextHandle *handle)
|
|
{
|
|
gtk_text_handle_update_for_role (handle);
|
|
}
|
|
|
|
GtkTextHandle *
|
|
gtk_text_handle_new (GtkWidget *parent)
|
|
{
|
|
GtkTextHandle *handle;
|
|
|
|
handle = g_object_new (GTK_TYPE_TEXT_HANDLE, NULL);
|
|
gtk_widget_set_parent (GTK_WIDGET (handle), parent);
|
|
|
|
return handle;
|
|
}
|
|
|
|
void
|
|
gtk_text_handle_set_role (GtkTextHandle *handle,
|
|
GtkTextHandleRole role)
|
|
{
|
|
g_return_if_fail (GTK_IS_TEXT_HANDLE (handle));
|
|
|
|
if (handle->role == role)
|
|
return;
|
|
|
|
handle->role = role;
|
|
gtk_text_handle_update_for_role (handle);
|
|
|
|
if (gtk_widget_get_visible (GTK_WIDGET (handle)))
|
|
{
|
|
if (handle->has_point)
|
|
gtk_text_handle_present_surface (handle);
|
|
}
|
|
}
|
|
|
|
GtkTextHandleRole
|
|
gtk_text_handle_get_role (GtkTextHandle *handle)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_TEXT_HANDLE (handle), GTK_TEXT_HANDLE_ROLE_CURSOR);
|
|
|
|
return handle->role;
|
|
}
|
|
|
|
void
|
|
gtk_text_handle_set_position (GtkTextHandle *handle,
|
|
const GdkRectangle *rect)
|
|
{
|
|
g_return_if_fail (GTK_IS_TEXT_HANDLE (handle));
|
|
|
|
if (handle->pointing_to.x == rect->x &&
|
|
handle->pointing_to.y == rect->y &&
|
|
handle->pointing_to.width == rect->width &&
|
|
handle->pointing_to.height == rect->height)
|
|
return;
|
|
|
|
handle->pointing_to = *rect;
|
|
handle->has_point = TRUE;
|
|
|
|
if (gtk_widget_is_visible (GTK_WIDGET (handle)))
|
|
gtk_text_handle_present_surface (handle);
|
|
}
|
|
|
|
gboolean
|
|
gtk_text_handle_get_is_dragged (GtkTextHandle *handle)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_TEXT_HANDLE (handle), FALSE);
|
|
|
|
return handle->dragged;
|
|
}
|