432 lines
14 KiB
C
432 lines
14 KiB
C
/*
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* Copyright (C) 2010-2011 Daiki Ueno <ueno@unixuser.org>
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* Copyright (C) 2010-2011 Red Hat, Inc.
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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 License
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* as published by the Free Software Foundation; either version 2 of
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* 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, but
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* 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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/**
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* SECTION:eek-gtk-keyboard
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* @short_description: a #GtkWidget displaying #EekKeyboard
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*/
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#include "config.h"
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#ifdef HAVE_LIBCANBERRA
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#include <canberra-gtk.h>
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#endif
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#include <math.h>
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#include <string.h>
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#include "eek-renderer.h"
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#include "eek-keyboard.h"
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#include "eek-gtk-keyboard.h"
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#include "eekboard/eekboard-context-service.h"
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#include "src/layout.h"
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enum {
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PROP_0,
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PROP_LAST
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};
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/* since 2.91.5 GDK_DRAWABLE was removed and gdk_cairo_create takes
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GdkWindow as the argument */
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#ifndef GDK_DRAWABLE
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#define GDK_DRAWABLE(x) (x)
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#endif
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typedef struct _EekGtkKeyboardPrivate
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{
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EekRenderer *renderer;
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LevelKeyboard *keyboard; // unowned reference; it's kept in server-context (FIXME)
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GdkEventSequence *sequence; // unowned reference
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} EekGtkKeyboardPrivate;
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G_DEFINE_TYPE_WITH_PRIVATE (EekGtkKeyboard, eek_gtk_keyboard, GTK_TYPE_DRAWING_AREA)
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static void render_pressed_button (GtkWidget *widget, struct button_place *place);
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static void render_released_button (GtkWidget *widget,
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const struct squeek_button *button);
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static void
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eek_gtk_keyboard_real_realize (GtkWidget *self)
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{
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gtk_widget_set_events (self,
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GDK_EXPOSURE_MASK |
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GDK_KEY_PRESS_MASK |
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GDK_KEY_RELEASE_MASK |
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GDK_BUTTON_PRESS_MASK |
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GDK_BUTTON_RELEASE_MASK |
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GDK_BUTTON_MOTION_MASK |
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GDK_TOUCH_MASK);
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GTK_WIDGET_CLASS (eek_gtk_keyboard_parent_class)->realize (self);
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}
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static gboolean
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eek_gtk_keyboard_real_draw (GtkWidget *self,
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cairo_t *cr)
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{
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EekGtkKeyboardPrivate *priv =
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eek_gtk_keyboard_get_instance_private (EEK_GTK_KEYBOARD (self));
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GtkAllocation allocation;
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gtk_widget_get_allocation (self, &allocation);
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if (!priv->renderer) {
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PangoContext *pcontext = gtk_widget_get_pango_context (self);
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priv->renderer = eek_renderer_new (priv->keyboard, pcontext);
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eek_renderer_set_allocation_size (priv->renderer,
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allocation.width,
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allocation.height);
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eek_renderer_set_scale_factor (priv->renderer,
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gtk_widget_get_scale_factor (self));
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}
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// render the keyboard without any key activity (TODO: from a cached buffer)
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eek_renderer_render_keyboard (priv->renderer, cr);
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// render only a few remaining changes
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squeek_layout_draw_all_changed(priv->keyboard->layout, EEK_GTK_KEYBOARD(self));
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return FALSE;
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}
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static void
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eek_gtk_keyboard_real_size_allocate (GtkWidget *self,
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GtkAllocation *allocation)
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{
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EekGtkKeyboardPrivate *priv =
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eek_gtk_keyboard_get_instance_private (EEK_GTK_KEYBOARD (self));
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if (priv->renderer)
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eek_renderer_set_allocation_size (priv->renderer,
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allocation->width,
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allocation->height);
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GTK_WIDGET_CLASS (eek_gtk_keyboard_parent_class)->
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size_allocate (self, allocation);
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}
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static void depress(EekGtkKeyboard *self,
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gdouble x, gdouble y, guint32 time)
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{
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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squeek_layout_depress(priv->keyboard->layout, priv->keyboard->manager->virtual_keyboard,
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x, y, eek_renderer_get_transformation(priv->renderer), time, self);
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}
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static void drag(EekGtkKeyboard *self,
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gdouble x, gdouble y, guint32 time)
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{
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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squeek_layout_drag(priv->keyboard->layout, priv->keyboard->manager->virtual_keyboard,
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x, y, eek_renderer_get_transformation(priv->renderer), time, self);
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}
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static void release(EekGtkKeyboard *self, guint32 time)
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{
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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squeek_layout_release(priv->keyboard->layout, priv->keyboard->manager->virtual_keyboard, eek_renderer_get_transformation(priv->renderer), time, self);
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}
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static gboolean
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eek_gtk_keyboard_real_button_press_event (GtkWidget *self,
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GdkEventButton *event)
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{
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if (event->type == GDK_BUTTON_PRESS && event->button == 1) {
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depress(EEK_GTK_KEYBOARD(self), event->x, event->y, event->time);
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}
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return TRUE;
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}
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// TODO: this belongs more in gtk_keyboard, with a way to find out which key to re-render
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static gboolean
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eek_gtk_keyboard_real_button_release_event (GtkWidget *self,
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GdkEventButton *event)
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{
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if (event->type == GDK_BUTTON_RELEASE && event->button == 1) {
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// TODO: can the event have different coords than the previous move event?
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release(EEK_GTK_KEYBOARD(self), event->time);
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}
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return TRUE;
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}
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static gboolean
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eek_gtk_keyboard_leave_event (GtkWidget *self,
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GdkEventCrossing *event)
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{
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if (event->type == GDK_LEAVE_NOTIFY) {
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// TODO: can the event have different coords than the previous move event?
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release(EEK_GTK_KEYBOARD(self), event->time);
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}
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return TRUE;
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}
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static gboolean
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eek_gtk_keyboard_real_motion_notify_event (GtkWidget *self,
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GdkEventMotion *event)
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{
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if (event->state & GDK_BUTTON1_MASK) {
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drag(EEK_GTK_KEYBOARD(self), event->x, event->y, event->time);
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}
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return TRUE;
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}
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// Only one touch stream at a time allowed. Others will be completely ignored.
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static gboolean
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handle_touch_event (GtkWidget *widget,
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GdkEventTouch *event)
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{
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EekGtkKeyboard *self = EEK_GTK_KEYBOARD (widget);
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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/* For each new touch, release the previous one and record the new event
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sequence. */
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if (event->type == GDK_TOUCH_BEGIN) {
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release(self, event->time);
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priv->sequence = event->sequence;
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depress(self, event->x, event->y, event->time);
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return TRUE;
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}
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/* Only allow the latest touch point to be dragged. */
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if (event->type == GDK_TOUCH_UPDATE && event->sequence == priv->sequence) {
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drag(self, event->x, event->y, event->time);
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}
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else if (event->type == GDK_TOUCH_END || event->type == GDK_TOUCH_CANCEL) {
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// TODO: can the event have different coords than the previous update event?
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/* Only respond to the release of the latest touch point. Previous
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touches have already been released. */
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if (event->sequence == priv->sequence) {
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release(self, event->time);
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priv->sequence = NULL;
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}
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}
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return TRUE;
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}
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static void
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eek_gtk_keyboard_real_unmap (GtkWidget *self)
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{
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EekGtkKeyboardPrivate *priv =
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eek_gtk_keyboard_get_instance_private (EEK_GTK_KEYBOARD (self));
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if (priv->keyboard) {
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squeek_layout_release_all_only(
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priv->keyboard->layout, priv->keyboard->manager->virtual_keyboard,
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gdk_event_get_time(NULL));
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}
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GTK_WIDGET_CLASS (eek_gtk_keyboard_parent_class)->unmap (self);
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}
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static void
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eek_gtk_keyboard_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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eek_gtk_keyboard_dispose (GObject *object)
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{
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EekGtkKeyboard *self = EEK_GTK_KEYBOARD (object);
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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if (priv->renderer) {
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g_object_unref (priv->renderer);
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priv->renderer = NULL;
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priv->renderer = NULL;
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}
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if (priv->keyboard) {
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squeek_layout_release_all_only(
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priv->keyboard->layout, priv->keyboard->manager->virtual_keyboard,
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gdk_event_get_time(NULL));
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priv->keyboard = NULL;
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}
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G_OBJECT_CLASS (eek_gtk_keyboard_parent_class)->dispose (object);
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}
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static void
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eek_gtk_keyboard_class_init (EekGtkKeyboardClass *klass)
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{
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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widget_class->realize = eek_gtk_keyboard_real_realize;
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widget_class->unmap = eek_gtk_keyboard_real_unmap;
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widget_class->draw = eek_gtk_keyboard_real_draw;
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widget_class->size_allocate = eek_gtk_keyboard_real_size_allocate;
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widget_class->button_press_event =
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eek_gtk_keyboard_real_button_press_event;
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widget_class->button_release_event =
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eek_gtk_keyboard_real_button_release_event;
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widget_class->motion_notify_event =
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eek_gtk_keyboard_real_motion_notify_event;
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widget_class->leave_notify_event =
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eek_gtk_keyboard_leave_event;
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widget_class->touch_event = handle_touch_event;
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gobject_class->set_property = eek_gtk_keyboard_set_property;
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gobject_class->dispose = eek_gtk_keyboard_dispose;
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}
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static void
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eek_gtk_keyboard_init (EekGtkKeyboard *self)
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{}
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/**
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* eek_gtk_keyboard_new:
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* @keyboard: an #EekKeyboard
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*
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* Create a new #GtkWidget displaying @keyboard.
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* Returns: a #GtkWidget
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*/
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GtkWidget *
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eek_gtk_keyboard_new (LevelKeyboard *keyboard)
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{
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EekGtkKeyboard *ret = EEK_GTK_KEYBOARD(g_object_new (EEK_TYPE_GTK_KEYBOARD, NULL));
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EekGtkKeyboardPrivate *priv = (EekGtkKeyboardPrivate*)eek_gtk_keyboard_get_instance_private (ret);
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priv->keyboard = keyboard;
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return GTK_WIDGET(ret);
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}
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static void
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render_pressed_button (GtkWidget *widget,
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struct button_place *place)
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{
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EekGtkKeyboard *self = EEK_GTK_KEYBOARD (widget);
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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GdkWindow *window = gtk_widget_get_window (widget);
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cairo_region_t *region = gdk_window_get_clip_region (window);
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GdkDrawingContext *context = gdk_window_begin_draw_frame (window, region);
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cairo_t *cr = gdk_drawing_context_get_cairo_context (context);
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eek_renderer_render_button (priv->renderer, cr, place, 1.0, TRUE, FALSE);
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/*
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eek_renderer_render_key (priv->renderer, cr, key, 1.5, TRUE);
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*/
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gdk_window_end_draw_frame (window, context);
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cairo_region_destroy (region);
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}
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void
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eek_gtk_render_locked_button (EekGtkKeyboard *self, struct button_place place)
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{
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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GdkWindow *window = gtk_widget_get_window (GTK_WIDGET(self));
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cairo_region_t *region = gdk_window_get_clip_region (window);
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GdkDrawingContext *context = gdk_window_begin_draw_frame (window, region);
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cairo_t *cr = gdk_drawing_context_get_cairo_context (context);
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eek_renderer_render_button (priv->renderer, cr, &place, 1.0, FALSE, TRUE);
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gdk_window_end_draw_frame (window, context);
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cairo_region_destroy (region);
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}
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// TODO: does it really redraw the entire keyboard?
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static void
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render_released_button (GtkWidget *widget,
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const struct squeek_button *button)
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{
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(void)button;
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EekGtkKeyboard *self = EEK_GTK_KEYBOARD (widget);
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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GdkWindow *window = gtk_widget_get_window (widget);
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cairo_region_t *region = gdk_window_get_clip_region (window);
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GdkDrawingContext *context = gdk_window_begin_draw_frame (window, region);
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cairo_t *cr = gdk_drawing_context_get_cairo_context (context);
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eek_renderer_render_keyboard (priv->renderer, cr);
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gdk_window_end_draw_frame (window, context);
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cairo_region_destroy (region);
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}
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void
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eek_gtk_on_button_pressed (struct button_place place,
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EekGtkKeyboard *self)
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{
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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/* renderer may have not been set yet if the widget is a popup */
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if (!priv->renderer)
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return;
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if (!place.row) {
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return;
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}
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render_pressed_button (GTK_WIDGET(self), &place);
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gtk_widget_queue_draw (GTK_WIDGET(self));
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#if HAVE_LIBCANBERRA
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ca_gtk_play_for_widget (widget, 0,
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CA_PROP_EVENT_ID, "button-pressed",
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CA_PROP_EVENT_DESCRIPTION, "virtual key pressed",
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CA_PROP_APPLICATION_ID, "org.fedorahosted.Eekboard",
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NULL);
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#endif
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}
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void
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eek_gtk_on_button_released (const struct squeek_button *button,
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struct squeek_view *view,
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EekGtkKeyboard *self)
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{
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(void)view;
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EekGtkKeyboardPrivate *priv = eek_gtk_keyboard_get_instance_private (self);
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/* renderer may have not been set yet if the widget is a popup */
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if (!priv->renderer)
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return;
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render_released_button (GTK_WIDGET(self), button);
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gtk_widget_queue_draw (GTK_WIDGET(self));
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#if HAVE_LIBCANBERRA
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ca_gtk_play_for_widget (widget, 0,
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CA_PROP_EVENT_ID, "button-released",
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CA_PROP_EVENT_DESCRIPTION, "virtual key pressed",
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CA_PROP_APPLICATION_ID, "org.fedorahosted.Eekboard",
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NULL);
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#endif
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}
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