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implement mouse selection

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This commit is contained in:
Sebastian Ramacher 2012-02-09 00:29:10 +01:00
parent 9fe09f0936
commit f8061febe4
1 changed files with 88 additions and 1 deletions
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89
page_widget.c
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@ -21,6 +21,7 @@ typedef struct zathura_page_widget_private_s {
unsigned int number_of_links; /**< Offset to the links */
girara_list_t* search_results; /** A list if there are search results that should be drawn */
int search_current; /** The index of the current search result */
zathura_rectangle_t selection; /** Region selected with the mouse */
} zathura_page_widget_private_t;
#define ZATHURA_PAGE_GET_PRIVATE(obj) \
@ -34,6 +35,8 @@ static void zathura_page_widget_size_allocate(GtkWidget* widget, GdkRectangle* a
static void redraw_rect(ZathuraPage* widget, zathura_rectangle_t* rectangle);
static void redraw_all_rects(ZathuraPage* widget, girara_list_t* rectangles);
static gboolean cb_zathura_page_widget_button_press_event(GtkWidget* widget, GdkEventButton* button);
static gboolean cb_zathura_page_widget_button_release_event(GtkWidget* widget, GdkEventButton* button);
static gboolean cb_zathura_page_widget_motion_notify(GtkWidget* widget, GdkEventMotion* event);
enum properties_e
{
@ -59,6 +62,8 @@ zathura_page_widget_class_init(ZathuraPageClass* class)
widget_class->expose_event = zathura_page_widget_expose;
widget_class->size_allocate = zathura_page_widget_size_allocate;
widget_class->button_press_event = cb_zathura_page_widget_button_press_event;
widget_class->button_release_event = cb_zathura_page_widget_button_release_event;
widget_class->motion_notify_event = cb_zathura_page_widget_motion_notify;
GObjectClass* object_class = G_OBJECT_CLASS(class);
object_class->finalize = zathura_page_widget_finalize;
@ -93,6 +98,7 @@ zathura_page_widget_init(ZathuraPage* widget)
priv->link_offset = 0;
priv->search_results = NULL;
priv->search_current = INT_MAX;
priv->selection.x1 = -1;
g_static_mutex_init(&(priv->lock));
/* we want mouse events */
@ -306,6 +312,14 @@ zathura_page_widget_expose(GtkWidget* widget, GdkEventExpose* event)
++idx;
GIRARA_LIST_FOREACH_END(priv->search_results, zathura_rectangle_t*, iter, rect);
}
/* draw selection */
if (priv->selection.y2 != -1 && priv->selection.x2 != -1) {
GdkColor color = priv->zathura->ui.colors.highlight_color;
cairo_set_source_rgba(cairo, color.red, color.green, color.blue, transparency);
cairo_rectangle(cairo, priv->selection.x1, priv->selection.y1,
(priv->selection.x2 - priv->selection.x1), (priv->selection.y2 - priv->selection.y1));
cairo_fill(cairo);
}
} else {
/* set background color */
cairo_set_source_rgb(cairo, 255, 255, 255);
@ -412,8 +426,35 @@ cb_zathura_page_widget_button_press_event(GtkWidget* widget, GdkEventButton* but
zathura_page_widget_private_t* priv = ZATHURA_PAGE_GET_PRIVATE(widget);
/* simple single click */
if (button->type == GDK_BUTTON_PRESS) {
/* start the selection */
priv->selection.x1 = button->x;
priv->selection.y1 = button->y;
priv->selection.x2 = -1;
priv->selection.y2 = -1;
} else if (button->type == GDK_2BUTTON_PRESS || button->type == GDK_3BUTTON_PRESS) {
/* abort the selection */
priv->selection.x1 = -1;
priv->selection.y1 = -1;
priv->selection.x2 = -1;
priv->selection.y2 = -1;
}
return false;
}
static gboolean
cb_zathura_page_widget_button_release_event(GtkWidget* widget, GdkEventButton* button)
{
g_return_val_if_fail(widget != NULL, false);
g_return_val_if_fail(button != NULL, false);
zathura_page_widget_private_t* priv = ZATHURA_PAGE_GET_PRIVATE(widget);
if (button->type != GDK_BUTTON_RELEASE) {
return false;
}
if (priv->selection.y2 == -1 && priv->selection.x2 == -1 ) {
/* simple single click */
/* get links */
if (priv->links_got == false) {
priv->links = zathura_page_links_get(priv->page, NULL);
@ -437,7 +478,53 @@ cb_zathura_page_widget_button_press_event(GtkWidget* widget, GdkEventButton* but
}
GIRARA_LIST_FOREACH_END(priv->links, zathura_link_t*, iter, link);
}
} else {
redraw_rect(ZATHURA_PAGE(widget), &priv->selection);
zathura_rectangle_t tmp = priv->selection;
tmp.x1 /= priv->page->document->scale;
tmp.x2 /= priv->page->document->scale;
tmp.y1 /= priv->page->document->scale;
tmp.y2 /= priv->page->document->scale;
char* text = zathura_page_get_text(priv->page, tmp, NULL);
if (text != NULL) {
gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), text, -1);
g_free(text);
}
}
priv->selection.x1 = -1;
priv->selection.y1 = -1;
priv->selection.x2 = -1;
priv->selection.y2 = -1;
return false;
}
static gboolean
cb_zathura_page_widget_motion_notify(GtkWidget* widget, GdkEventMotion* event)
{
g_return_val_if_fail(widget != NULL, false);
g_return_val_if_fail(event != NULL, false);
if ((event->state & GDK_BUTTON1_MASK) == 0) {
return false;
}
zathura_page_widget_private_t* priv = ZATHURA_PAGE_GET_PRIVATE(widget);
zathura_rectangle_t tmp = priv->selection;
if (event->x < priv->selection.x1) {
tmp.x1 = event->x;
} else {
tmp.x2 = event->x;
}
if (event->y < priv->selection.y1) {
tmp.y1 = event->y;
} else {
tmp.y2 = event->y;
}
redraw_rect(ZATHURA_PAGE(widget), &priv->selection);
redraw_rect(ZATHURA_PAGE(widget), &tmp);
priv->selection = tmp;
return false;
}