/dev/twasilczyk/screenshot: c259d39b2619: scrncap: darken not se...

[Tomasz Wasilczyk]

Changeset: c259d39b2619ba8e63f9029c9ae68548716c298c
Author:	 Tomasz Wasilczyk <twasilczyk at pidgin.im>
Date:	 2014-04-29 11:54 +0200
Branch:	 default
URL: https://hg.pidgin.im/dev/twasilczyk/screenshot/rev/c259d39b2619

Description:

scrncap: darken not selected cropping area, close with esc or focus loosing

diffstat:

 pidgin/plugins/screencap.c |  82 ++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 80 insertions(+), 2 deletions(-)

diffs (146 lines):

diff --git a/pidgin/plugins/screencap.c b/pidgin/plugins/screencap.c
--- a/pidgin/plugins/screencap.c
+++ b/pidgin/plugins/screencap.c
@@ -22,6 +22,8 @@
 
 #include "internal.h"
 
+#include <gdk/gdkkeysyms.h>
+
 #include "debug.h"
 #include "version.h"
 
@@ -36,6 +38,10 @@ static gboolean is_shooting = FALSE;
 static guint shooting_timeout = 0;
 static GtkWindow *crop_window;
 
+/******************************************************************************
+ * libpidgin helper functions
+ ******************************************************************************/
+
 static inline void
 scrncap_conv_set_data(PidginConversation *gtkconv, const gchar *key,
 	gpointer value)
@@ -53,6 +59,10 @@ scrncap_conv_get_data(PidginConversation
 	return g_object_get_data(G_OBJECT(gtkconv->tab_cont), key);
 }
 
+/******************************************************************************
+ * GdkPixbuf helper functions
+ ******************************************************************************/
+
 static GdkPixbuf *
 scrncap_perform_screenshot(void)
 {
@@ -70,6 +80,33 @@ scrncap_perform_screenshot(void)
 }
 
 static void
+scrncap_pixbuf_darken(GdkPixbuf *pixbuf)
+{
+	guchar *pixels;
+	int i, y, width, height, row_width, n_channels, rowstride, pad;
+
+	pixels = gdk_pixbuf_get_pixels(pixbuf);
+	width = gdk_pixbuf_get_width(pixbuf);
+	height = gdk_pixbuf_get_height(pixbuf);
+	n_channels = gdk_pixbuf_get_n_channels(pixbuf);
+	rowstride = gdk_pixbuf_get_rowstride(pixbuf);
+
+	row_width = width * n_channels;
+	pad = rowstride - row_width;
+	g_return_if_fail(pad >= 0);
+
+	for (y = 0; y < height; y++) {
+		for (i = 0; i < row_width; i++, pixels++)
+			*pixels /= 2;
+		pixels += pad;
+	}
+}
+
+/******************************************************************************
+ * Crop window
+ ******************************************************************************/
+
+static void
 scrncap_crop_window_close(GtkWindow *window, gpointer _unused)
 {
 	GdkPixbuf *screenshot;
@@ -84,10 +121,36 @@ scrncap_crop_window_close(GtkWindow *win
 }
 
 static gboolean
+scrncap_crop_window_keypress(GtkWidget *window, GdkEventKey *event,
+	gpointer _unused)
+{
+	guint key = event->keyval;
+
+	if (key == GDK_Escape) {
+		gtk_widget_destroy(window);
+		return TRUE;
+	}
+	if (key == GDK_Return) {
+		/* TODO: process */
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+static gboolean
+scrncap_crop_window_focusout(GtkWidget *window, GdkEventFocus *event,
+	gpointer _unused)
+{
+	gtk_widget_destroy(window);
+	return FALSE;
+}
+
+static gboolean
 scrncap_do_screenshot_cb(gpointer _webview)
 {
 	PidginWebView *webview = PIDGIN_WEBVIEW(_webview);
-	GdkPixbuf *screenshot;
+	GdkPixbuf *screenshot, *screenshot_d;
 	int width, height;
 	GtkWidget *image;
 
@@ -110,9 +173,16 @@ scrncap_do_screenshot_cb(gpointer _webvi
 
 	g_signal_connect(G_OBJECT(crop_window), "destroy",
 		G_CALLBACK(scrncap_crop_window_close), NULL);
+	g_signal_connect(G_OBJECT(crop_window), "key-press-event",
+		G_CALLBACK(scrncap_crop_window_keypress), NULL);
+	g_signal_connect(G_OBJECT(crop_window), "focus-out-event",
+		G_CALLBACK(scrncap_crop_window_focusout), NULL);
 	g_object_set_data(G_OBJECT(crop_window), "screenshot", screenshot);
 
-	image = gtk_image_new_from_pixbuf(screenshot);
+	screenshot_d = gdk_pixbuf_copy(screenshot);
+	scrncap_pixbuf_darken(screenshot_d);
+	image = gtk_image_new_from_pixbuf(screenshot_d);
+	g_object_unref(screenshot_d);
 	gtk_container_add(GTK_CONTAINER(crop_window), image);
 
 	gtk_widget_show_all(GTK_WIDGET(crop_window));
@@ -131,6 +201,10 @@ scrncap_do_screenshot(GtkAction *action,
 		scrncap_do_screenshot_cb, webview);
 }
 
+/******************************************************************************
+ * PidginConversation setup
+ ******************************************************************************/
+
 static void
 scrncap_conversation_init(PidginConversation *gtkconv)
 {
@@ -233,6 +307,10 @@ scrncap_conversation_uninit(PidginConver
 	scrncap_conv_set_data(gtkconv, "scrncap-btn-lean", NULL);
 }
 
+/******************************************************************************
+ * Plugin setup
+ ******************************************************************************/
+
 static gboolean
 scrncap_plugin_load(PurplePlugin *plugin)
 {