[gnome-contacts] Adding support for UmCropArea widget from gnome-control-center.
- From: Alexander Larsson <alexl src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-contacts] Adding support for UmCropArea widget from gnome-control-center.
- Date: Tue, 7 Feb 2012 14:31:11 +0000 (UTC)
commit 66b6b5427d77b0579c403b0e7bdf72b051047ae9
Author: Erick PÃrez Castellanos <erick red gmail com>
Date: Mon Feb 6 10:17:38 2012 -0500
Adding support for UmCropArea widget from gnome-control-center.
src/Makefile.am | 2 +
src/um-crop-area.c | 818 ++++++++++++++++++++++++++++++++++++++++++++++++++++
src/um-crop-area.h | 65 ++++
vapi/custom.vapi | 12 +
4 files changed, 897 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index d74f60e..f96723e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -54,6 +54,7 @@ contact-resources.c: contacts.gresource.xml app-menu.ui
--target=$@ --sourcedir=$(srcdir) --c-name contacts --generate-source
gnome_contacts_SOURCES = \
+ um-crop-area.c \
contact-resources.c \
gtk-notification.c \
contacts-esd-setup.c \
@@ -68,6 +69,7 @@ CLEANFILES = \
*.vapi *.stamp
EXTRA_DIST = \
+ um-crop-area.h \
gtk-notification.h \
contacts.gresource.xml \
app-menu.ui \
diff --git a/src/um-crop-area.c b/src/um-crop-area.c
new file mode 100644
index 0000000..94ddd0d
--- /dev/null
+++ b/src/um-crop-area.c
@@ -0,0 +1,818 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright 2009 Red Hat, Inc,
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Written by: Matthias Clasen <mclasen redhat com>
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+
+#include "um-crop-area.h"
+
+struct _UmCropAreaPrivate {
+ GdkPixbuf *browse_pixbuf;
+ GdkPixbuf *pixbuf;
+ GdkPixbuf *color_shifted;
+ gdouble scale;
+ GdkRectangle image;
+ GdkCursorType current_cursor;
+ GdkRectangle crop;
+ gint active_region;
+ gint last_press_x;
+ gint last_press_y;
+ gint base_width;
+ gint base_height;
+ gdouble aspect;
+};
+
+G_DEFINE_TYPE (UmCropArea, um_crop_area, GTK_TYPE_DRAWING_AREA);
+
+static inline guchar
+shift_color_byte (guchar b,
+ int shift)
+{
+ return CLAMP(b + shift, 0, 255);
+}
+
+static void
+shift_colors (GdkPixbuf *pixbuf,
+ gint red,
+ gint green,
+ gint blue,
+ gint alpha)
+{
+ gint x, y, offset, y_offset, rowstride, width, height;
+ guchar *pixels;
+ gint channels;
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+ pixels = gdk_pixbuf_get_pixels (pixbuf);
+ channels = gdk_pixbuf_get_n_channels (pixbuf);
+
+ for (y = 0; y < height; y++) {
+ y_offset = y * rowstride;
+ for (x = 0; x < width; x++) {
+ offset = y_offset + x * channels;
+ if (red != 0)
+ pixels[offset] = shift_color_byte (pixels[offset], red);
+ if (green != 0)
+ pixels[offset + 1] = shift_color_byte (pixels[offset + 1], green);
+ if (blue != 0)
+ pixels[offset + 2] = shift_color_byte (pixels[offset + 2], blue);
+ if (alpha != 0 && channels >= 4)
+ pixels[offset + 3] = shift_color_byte (pixels[offset + 3], blue);
+ }
+ }
+}
+
+static void
+update_pixbufs (UmCropArea *area)
+{
+ gint width;
+ gint height;
+ GtkAllocation allocation;
+ gdouble scale;
+ GdkRGBA color;
+ guint32 pixel;
+ gint dest_x, dest_y, dest_width, dest_height;
+ GtkWidget *widget;
+ GtkStyleContext *context;
+
+ widget = GTK_WIDGET (area);
+ gtk_widget_get_allocation (widget, &allocation);
+ context = gtk_widget_get_style_context (widget);
+
+ if (area->priv->pixbuf == NULL ||
+ gdk_pixbuf_get_width (area->priv->pixbuf) != allocation.width ||
+ gdk_pixbuf_get_height (area->priv->pixbuf) != allocation.height) {
+ if (area->priv->pixbuf != NULL)
+ g_object_unref (area->priv->pixbuf);
+ area->priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
+ gdk_pixbuf_get_has_alpha (area->priv->browse_pixbuf),
+ 8,
+ allocation.width, allocation.height);
+
+ gtk_style_context_get_background_color (context, gtk_style_context_get_state (context), &color);
+ pixel = (((gint)(color.red * 1.0)) << 16) |
+ (((gint)(color.green * 1.0)) << 8) |
+ ((gint)(color.blue * 1.0));
+ gdk_pixbuf_fill (area->priv->pixbuf, pixel);
+
+ width = gdk_pixbuf_get_width (area->priv->browse_pixbuf);
+ height = gdk_pixbuf_get_height (area->priv->browse_pixbuf);
+
+ scale = allocation.height / (gdouble)height;
+ if (scale * width > allocation.width)
+ scale = allocation.width / (gdouble)width;
+
+ dest_width = width * scale;
+ dest_height = height * scale;
+ dest_x = (allocation.width - dest_width) / 2;
+ dest_y = (allocation.height - dest_height) / 2,
+
+ gdk_pixbuf_scale (area->priv->browse_pixbuf,
+ area->priv->pixbuf,
+ dest_x, dest_y,
+ dest_width, dest_height,
+ dest_x, dest_y,
+ scale, scale,
+ GDK_INTERP_BILINEAR);
+
+ if (area->priv->color_shifted)
+ g_object_unref (area->priv->color_shifted);
+ area->priv->color_shifted = gdk_pixbuf_copy (area->priv->pixbuf);
+ shift_colors (area->priv->color_shifted, -32, -32, -32, 0);
+
+ if (area->priv->scale == 0.0) {
+ area->priv->crop.width = 2 * area->priv->base_width / scale;
+ area->priv->crop.height = 2 * area->priv->base_height / scale;
+ area->priv->crop.x = (gdk_pixbuf_get_width (area->priv->browse_pixbuf) - area->priv->crop.width) / 2;
+ area->priv->crop.y = (gdk_pixbuf_get_height (area->priv->browse_pixbuf) - area->priv->crop.height) / 2;
+ }
+
+ area->priv->scale = scale;
+ area->priv->image.x = dest_x;
+ area->priv->image.y = dest_y;
+ area->priv->image.width = dest_width;
+ area->priv->image.height = dest_height;
+ }
+}
+
+static void
+crop_to_widget (UmCropArea *area,
+ GdkRectangle *crop)
+{
+ crop->x = area->priv->image.x + area->priv->crop.x * area->priv->scale;
+ crop->y = area->priv->image.y + area->priv->crop.y * area->priv->scale;
+ crop->width = area->priv->crop.width * area->priv->scale;
+ crop->height = area->priv->crop.height * area->priv->scale;
+}
+
+typedef enum {
+ OUTSIDE,
+ INSIDE,
+ TOP,
+ TOP_LEFT,
+ TOP_RIGHT,
+ BOTTOM,
+ BOTTOM_LEFT,
+ BOTTOM_RIGHT,
+ LEFT,
+ RIGHT
+} Location;
+
+static gboolean
+um_crop_area_draw (GtkWidget *widget,
+ cairo_t *cr)
+{
+ GdkRectangle crop;
+ gint width, height;
+ UmCropArea *uarea = UM_CROP_AREA (widget);
+
+ if (uarea->priv->browse_pixbuf == NULL)
+ return FALSE;
+
+ update_pixbufs (uarea);
+
+ width = gdk_pixbuf_get_width (uarea->priv->pixbuf);
+ height = gdk_pixbuf_get_height (uarea->priv->pixbuf);
+ crop_to_widget (uarea, &crop);
+
+ gdk_cairo_set_source_pixbuf (cr, uarea->priv->color_shifted, 0, 0);
+ cairo_rectangle (cr, 0, 0, width, crop.y);
+ cairo_rectangle (cr, 0, crop.y, crop.x, crop.height);
+ cairo_rectangle (cr, crop.x + crop.width, crop.y, width - crop.x - crop.width, crop.height);
+ cairo_rectangle (cr, 0, crop.y + crop.height, width, height - crop.y - crop.height);
+ cairo_fill (cr);
+
+ gdk_cairo_set_source_pixbuf (cr, uarea->priv->pixbuf, 0, 0);
+ cairo_rectangle (cr, crop.x, crop.y, crop.width, crop.height);
+ cairo_fill (cr);
+
+ if (uarea->priv->active_region != OUTSIDE) {
+ gint x1, x2, y1, y2;
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_set_line_width (cr, 1.0);
+ x1 = crop.x + crop.width / 3.0;
+ x2 = crop.x + 2 * crop.width / 3.0;
+ y1 = crop.y + crop.height / 3.0;
+ y2 = crop.y + 2 * crop.height / 3.0;
+
+ cairo_move_to (cr, x1 + 0.5, crop.y);
+ cairo_line_to (cr, x1 + 0.5, crop.y + crop.height);
+
+ cairo_move_to (cr, x2 + 0.5, crop.y);
+ cairo_line_to (cr, x2 + 0.5, crop.y + crop.height);
+
+ cairo_move_to (cr, crop.x, y1 + 0.5);
+ cairo_line_to (cr, crop.x + crop.width, y1 + 0.5);
+
+ cairo_move_to (cr, crop.x, y2 + 0.5);
+ cairo_line_to (cr, crop.x + crop.width, y2 + 0.5);
+ cairo_stroke (cr);
+ }
+
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_set_line_width (cr, 1.0);
+ cairo_rectangle (cr,
+ crop.x + 0.5,
+ crop.y + 0.5,
+ crop.width - 1.0,
+ crop.height - 1.0);
+ cairo_stroke (cr);
+
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_set_line_width (cr, 2.0);
+ cairo_rectangle (cr,
+ crop.x + 2.0,
+ crop.y + 2.0,
+ crop.width - 4.0,
+ crop.height - 4.0);
+ cairo_stroke (cr);
+
+ return FALSE;
+}
+
+typedef enum {
+ BELOW,
+ LOWER,
+ BETWEEN,
+ UPPER,
+ ABOVE
+} Range;
+
+static Range
+find_range (gint x,
+ gint min,
+ gint max)
+{
+ gint tolerance = 12;
+
+ if (x < min - tolerance)
+ return BELOW;
+ if (x <= min + tolerance)
+ return LOWER;
+ if (x < max - tolerance)
+ return BETWEEN;
+ if (x <= max + tolerance)
+ return UPPER;
+ return ABOVE;
+}
+
+static Location
+find_location (GdkRectangle *rect,
+ gint x,
+ gint y)
+{
+ Range x_range, y_range;
+ Location location[5][5] = {
+ { OUTSIDE, OUTSIDE, OUTSIDE, OUTSIDE, OUTSIDE },
+ { OUTSIDE, TOP_LEFT, TOP, TOP_RIGHT, OUTSIDE },
+ { OUTSIDE, LEFT, INSIDE, RIGHT, OUTSIDE },
+ { OUTSIDE, BOTTOM_LEFT, BOTTOM, BOTTOM_RIGHT, OUTSIDE },
+ { OUTSIDE, OUTSIDE, OUTSIDE, OUTSIDE, OUTSIDE }
+ };
+
+ x_range = find_range (x, rect->x, rect->x + rect->width);
+ y_range = find_range (y, rect->y, rect->y + rect->height);
+
+ return location[y_range][x_range];
+}
+
+static void
+update_cursor (UmCropArea *area,
+ gint x,
+ gint y)
+{
+ gint cursor_type;
+ GdkRectangle crop;
+ gint region;
+
+ region = area->priv->active_region;
+ if (region == OUTSIDE) {
+ crop_to_widget (area, &crop);
+ region = find_location (&crop, x, y);
+ }
+
+ switch (region) {
+ case OUTSIDE:
+ cursor_type = GDK_LEFT_PTR;
+ break;
+ case TOP_LEFT:
+ cursor_type = GDK_TOP_LEFT_CORNER;
+ break;
+ case TOP:
+ cursor_type = GDK_TOP_SIDE;
+ break;
+ case TOP_RIGHT:
+ cursor_type = GDK_TOP_RIGHT_CORNER;
+ break;
+ case LEFT:
+ cursor_type = GDK_LEFT_SIDE;
+ break;
+ case INSIDE:
+ cursor_type = GDK_FLEUR;
+ break;
+ case RIGHT:
+ cursor_type = GDK_RIGHT_SIDE;
+ break;
+ case BOTTOM_LEFT:
+ cursor_type = GDK_BOTTOM_LEFT_CORNER;
+ break;
+ case BOTTOM:
+ cursor_type = GDK_BOTTOM_SIDE;
+ break;
+ case BOTTOM_RIGHT:
+ cursor_type = GDK_BOTTOM_RIGHT_CORNER;
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+
+ if (cursor_type != area->priv->current_cursor) {
+ GdkCursor *cursor = gdk_cursor_new (cursor_type);
+ gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (area)), cursor);
+ g_object_unref (cursor);
+ area->priv->current_cursor = cursor_type;
+ }
+}
+
+static int
+eval_radial_line (gdouble center_x, gdouble center_y,
+ gdouble bounds_x, gdouble bounds_y,
+ gdouble user_x)
+{
+ gdouble decision_slope;
+ gdouble decision_intercept;
+
+ decision_slope = (bounds_y - center_y) / (bounds_x - center_x);
+ decision_intercept = -(decision_slope * bounds_x);
+
+ return (int) (decision_slope * user_x + decision_intercept);
+}
+
+static gboolean
+um_crop_area_motion_notify_event (GtkWidget *widget,
+ GdkEventMotion *event)
+{
+ UmCropArea *area = UM_CROP_AREA (widget);
+ gint x, y;
+ gint delta_x, delta_y;
+ gint width, height;
+ gint adj_width, adj_height;
+ gint pb_width, pb_height;
+ GdkRectangle damage;
+ gint left, right, top, bottom;
+ gdouble new_width, new_height;
+ gdouble center_x, center_y;
+ gint min_width, min_height;
+
+ if (area->priv->browse_pixbuf == NULL)
+ return FALSE;
+
+ update_cursor (area, event->x, event->y);
+
+ crop_to_widget (area, &damage);
+ gtk_widget_queue_draw_area (widget,
+ damage.x - 1, damage.y - 1,
+ damage.width + 2, damage.height + 2);
+
+ pb_width = gdk_pixbuf_get_width (area->priv->browse_pixbuf);
+ pb_height = gdk_pixbuf_get_height (area->priv->browse_pixbuf);
+
+ x = (event->x - area->priv->image.x) / area->priv->scale;
+ y = (event->y - area->priv->image.y) / area->priv->scale;
+
+ delta_x = x - area->priv->last_press_x;
+ delta_y = y - area->priv->last_press_y;
+ area->priv->last_press_x = x;
+ area->priv->last_press_y = y;
+
+ left = area->priv->crop.x;
+ right = area->priv->crop.x + area->priv->crop.width - 1;
+ top = area->priv->crop.y;
+ bottom = area->priv->crop.y + area->priv->crop.height - 1;
+
+ center_x = (left + right) / 2.0;
+ center_y = (top + bottom) / 2.0;
+
+ switch (area->priv->active_region) {
+ case INSIDE:
+ width = right - left + 1;
+ height = bottom - top + 1;
+
+ left += delta_x;
+ right += delta_x;
+ top += delta_y;
+ bottom += delta_y;
+
+ if (left < 0)
+ left = 0;
+ if (top < 0)
+ top = 0;
+ if (right > pb_width)
+ right = pb_width;
+ if (bottom > pb_height)
+ bottom = pb_height;
+
+ adj_width = right - left + 1;
+ adj_height = bottom - top + 1;
+ if (adj_width != width) {
+ if (delta_x < 0)
+ right = left + width - 1;
+ else
+ left = right - width + 1;
+ }
+ if (adj_height != height) {
+ if (delta_y < 0)
+ bottom = top + height - 1;
+ else
+ top = bottom - height + 1;
+ }
+
+ break;
+
+ case TOP_LEFT:
+ if (area->priv->aspect < 0) {
+ top = y;
+ left = x;
+ }
+ else if (y < eval_radial_line (center_x, center_y, left, top, x)) {
+ top = y;
+ new_width = (bottom - top) * area->priv->aspect;
+ left = right - new_width;
+ }
+ else {
+ left = x;
+ new_height = (right - left) / area->priv->aspect;
+ top = bottom - new_height;
+ }
+ break;
+
+ case TOP:
+ top = y;
+ if (area->priv->aspect > 0) {
+ new_width = (bottom - top) * area->priv->aspect;
+ right = left + new_width;
+ }
+ break;
+
+ case TOP_RIGHT:
+ if (area->priv->aspect < 0) {
+ top = y;
+ right = x;
+ }
+ else if (y < eval_radial_line (center_x, center_y, right, top, x)) {
+ top = y;
+ new_width = (bottom - top) * area->priv->aspect;
+ right = left + new_width;
+ }
+ else {
+ right = x;
+ new_height = (right - left) / area->priv->aspect;
+ top = bottom - new_height;
+ }
+ break;
+
+ case LEFT:
+ left = x;
+ if (area->priv->aspect > 0) {
+ new_height = (right - left) / area->priv->aspect;
+ bottom = top + new_height;
+ }
+ break;
+
+ case BOTTOM_LEFT:
+ if (area->priv->aspect < 0) {
+ bottom = y;
+ left = x;
+ }
+ else if (y < eval_radial_line (center_x, center_y, left, bottom, x)) {
+ left = x;
+ new_height = (right - left) / area->priv->aspect;
+ bottom = top + new_height;
+ }
+ else {
+ bottom = y;
+ new_width = (bottom - top) * area->priv->aspect;
+ left = right - new_width;
+ }
+ break;
+
+ case RIGHT:
+ right = x;
+ if (area->priv->aspect > 0) {
+ new_height = (right - left) / area->priv->aspect;
+ bottom = top + new_height;
+ }
+ break;
+
+ case BOTTOM_RIGHT:
+ if (area->priv->aspect < 0) {
+ bottom = y;
+ right = x;
+ }
+ else if (y < eval_radial_line (center_x, center_y, right, bottom, x)) {
+ right = x;
+ new_height = (right - left) / area->priv->aspect;
+ bottom = top + new_height;
+ }
+ else {
+ bottom = y;
+ new_width = (bottom - top) * area->priv->aspect;
+ right = left + new_width;
+ }
+ break;
+
+ case BOTTOM:
+ bottom = y;
+ if (area->priv->aspect > 0) {
+ new_width = (bottom - top) * area->priv->aspect;
+ right= left + new_width;
+ }
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ min_width = area->priv->base_width / area->priv->scale;
+ min_height = area->priv->base_height / area->priv->scale;
+
+ width = right - left + 1;
+ height = bottom - top + 1;
+ if (area->priv->aspect < 0) {
+ if (left < 0)
+ left = 0;
+ if (top < 0)
+ top = 0;
+ if (right > pb_width)
+ right = pb_width;
+ if (bottom > pb_height)
+ bottom = pb_height;
+
+ width = right - left + 1;
+ height = bottom - top + 1;
+
+ switch (area->priv->active_region) {
+ case LEFT:
+ case TOP_LEFT:
+ case BOTTOM_LEFT:
+ if (width < min_width)
+ left = right - min_width;
+ break;
+ case RIGHT:
+ case TOP_RIGHT:
+ case BOTTOM_RIGHT:
+ if (width < min_width)
+ right = left + min_width;
+ break;
+
+ default: ;
+ }
+
+ switch (area->priv->active_region) {
+ case TOP:
+ case TOP_LEFT:
+ case TOP_RIGHT:
+ if (height < min_height)
+ top = bottom - min_height;
+ break;
+ case BOTTOM:
+ case BOTTOM_LEFT:
+ case BOTTOM_RIGHT:
+ if (height < min_height)
+ bottom = top + min_height;
+ break;
+
+ default: ;
+ }
+ }
+ else {
+ if (left < 0 || top < 0 ||
+ right > pb_width || bottom > pb_height ||
+ width < min_width || height < min_height) {
+ left = area->priv->crop.x;
+ right = area->priv->crop.x + area->priv->crop.width - 1;
+ top = area->priv->crop.y;
+ bottom = area->priv->crop.y + area->priv->crop.height - 1;
+ }
+ }
+
+ area->priv->crop.x = left;
+ area->priv->crop.y = top;
+ area->priv->crop.width = right - left + 1;
+ area->priv->crop.height = bottom - top + 1;
+
+ crop_to_widget (area, &damage);
+ gtk_widget_queue_draw_area (widget,
+ damage.x - 1, damage.y - 1,
+ damage.width + 2, damage.height + 2);
+
+ return FALSE;
+}
+
+static gboolean
+um_crop_area_button_press_event (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ UmCropArea *area = UM_CROP_AREA (widget);
+ GdkRectangle crop;
+
+ if (area->priv->browse_pixbuf == NULL)
+ return FALSE;
+
+ crop_to_widget (area, &crop);
+
+ area->priv->last_press_x = (event->x - area->priv->image.x) / area->priv->scale;
+ area->priv->last_press_y = (event->y - area->priv->image.y) / area->priv->scale;
+ area->priv->active_region = find_location (&crop, event->x, event->y);
+
+ gtk_widget_queue_draw_area (widget,
+ crop.x - 1, crop.y - 1,
+ crop.width + 2, crop.height + 2);
+
+ return FALSE;
+}
+
+static gboolean
+um_crop_area_button_release_event (GtkWidget *widget,
+ GdkEventButton *event)
+{
+ UmCropArea *area = UM_CROP_AREA (widget);
+ GdkRectangle crop;
+
+ if (area->priv->browse_pixbuf == NULL)
+ return FALSE;
+
+ crop_to_widget (area, &crop);
+
+ area->priv->last_press_x = -1;
+ area->priv->last_press_y = -1;
+ area->priv->active_region = OUTSIDE;
+
+ gtk_widget_queue_draw_area (widget,
+ crop.x - 1, crop.y - 1,
+ crop.width + 2, crop.height + 2);
+
+ return FALSE;
+}
+
+static void
+um_crop_area_finalize (GObject *object)
+{
+ UmCropArea *area = UM_CROP_AREA (object);
+
+ if (area->priv->browse_pixbuf) {
+ g_object_unref (area->priv->browse_pixbuf);
+ area->priv->browse_pixbuf = NULL;
+ }
+ if (area->priv->pixbuf) {
+ g_object_unref (area->priv->pixbuf);
+ area->priv->pixbuf = NULL;
+ }
+ if (area->priv->color_shifted) {
+ g_object_unref (area->priv->color_shifted);
+ area->priv->color_shifted = NULL;
+ }
+}
+
+static void
+um_crop_area_class_init (UmCropAreaClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ object_class->finalize = um_crop_area_finalize;
+ widget_class->draw = um_crop_area_draw;
+ widget_class->button_press_event = um_crop_area_button_press_event;
+ widget_class->button_release_event = um_crop_area_button_release_event;
+ widget_class->motion_notify_event = um_crop_area_motion_notify_event;
+
+ g_type_class_add_private (klass, sizeof (UmCropAreaPrivate));
+}
+
+static void
+um_crop_area_init (UmCropArea *area)
+{
+ area->priv = (G_TYPE_INSTANCE_GET_PRIVATE ((area), UM_TYPE_CROP_AREA,
+ UmCropAreaPrivate));
+
+ gtk_widget_add_events (GTK_WIDGET (area), GDK_POINTER_MOTION_MASK |
+ GDK_BUTTON_PRESS_MASK |
+ GDK_BUTTON_RELEASE_MASK);
+
+ area->priv->scale = 0.0;
+ area->priv->image.x = 0;
+ area->priv->image.y = 0;
+ area->priv->image.width = 0;
+ area->priv->image.height = 0;
+ area->priv->active_region = OUTSIDE;
+ area->priv->base_width = 48;
+ area->priv->base_height = 48;
+ area->priv->aspect = 1;
+}
+
+GtkWidget *
+um_crop_area_new (void)
+{
+ return g_object_new (UM_TYPE_CROP_AREA, NULL);
+}
+
+GdkPixbuf *
+um_crop_area_get_picture (UmCropArea *area)
+{
+ gint width, height;
+
+ width = gdk_pixbuf_get_width (area->priv->browse_pixbuf);
+ height = gdk_pixbuf_get_height (area->priv->browse_pixbuf);
+ width = MIN (area->priv->crop.width, width - area->priv->crop.x);
+ height = MIN (area->priv->crop.height, height - area->priv->crop.y);
+
+ return gdk_pixbuf_new_subpixbuf (area->priv->browse_pixbuf,
+ area->priv->crop.x,
+ area->priv->crop.y,
+ width, height);
+}
+
+void
+um_crop_area_set_picture (UmCropArea *area,
+ GdkPixbuf *pixbuf)
+{
+ int width;
+ int height;
+
+ if (area->priv->browse_pixbuf) {
+ g_object_unref (area->priv->browse_pixbuf);
+ area->priv->browse_pixbuf = NULL;
+ }
+ if (pixbuf) {
+ area->priv->browse_pixbuf = g_object_ref (pixbuf);
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+ } else {
+ width = 0;
+ height = 0;
+ }
+
+ area->priv->crop.width = 2 * area->priv->base_width;
+ area->priv->crop.height = 2 * area->priv->base_height;
+ area->priv->crop.x = (width - area->priv->crop.width) / 2;
+ area->priv->crop.y = (height - area->priv->crop.height) / 2;
+
+ area->priv->scale = 0.0;
+ area->priv->image.x = 0;
+ area->priv->image.y = 0;
+ area->priv->image.width = 0;
+ area->priv->image.height = 0;
+
+ gtk_widget_queue_draw (GTK_WIDGET (area));
+}
+
+void
+um_crop_area_set_min_size (UmCropArea *area,
+ gint width,
+ gint height)
+{
+ area->priv->base_width = width;
+ area->priv->base_height = height;
+
+ if (area->priv->aspect > 0) {
+ area->priv->aspect = area->priv->base_width / (gdouble)area->priv->base_height;
+ }
+}
+
+void
+um_crop_area_set_constrain_aspect (UmCropArea *area,
+ gboolean constrain)
+{
+ if (constrain) {
+ area->priv->aspect = area->priv->base_width / (gdouble)area->priv->base_height;
+ }
+ else {
+ area->priv->aspect = -1;
+ }
+}
+
diff --git a/src/um-crop-area.h b/src/um-crop-area.h
new file mode 100644
index 0000000..8992957
--- /dev/null
+++ b/src/um-crop-area.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright  2009 Bastien Nocera <hadess hadess net>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _UM_CROP_AREA_H_
+#define _UM_CROP_AREA_H_
+
+#include <glib-object.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define UM_TYPE_CROP_AREA (um_crop_area_get_type ())
+#define UM_CROP_AREA(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), UM_TYPE_CROP_AREA, \
+ UmCropArea))
+#define UM_CROP_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), UM_TYPE_CROP_AREA, \
+ UmCropAreaClass))
+#define UM_IS_CROP_AREA(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), UM_TYPE_CROP_AREA))
+#define UM_IS_CROP_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), UM_TYPE_CROP_AREA))
+#define UM_CROP_AREA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), UM_TYPE_CROP_AREA, \
+ UmCropAreaClass))
+
+typedef struct _UmCropAreaClass UmCropAreaClass;
+typedef struct _UmCropArea UmCropArea;
+typedef struct _UmCropAreaPrivate UmCropAreaPrivate;
+
+struct _UmCropAreaClass {
+ GtkDrawingAreaClass parent_class;
+};
+
+struct _UmCropArea {
+ GtkDrawingArea parent_instance;
+ UmCropAreaPrivate *priv;
+};
+
+GType um_crop_area_get_type (void) G_GNUC_CONST;
+
+GtkWidget *um_crop_area_new (void);
+GdkPixbuf *um_crop_area_get_picture (UmCropArea *area);
+void um_crop_area_set_picture (UmCropArea *area,
+ GdkPixbuf *pixbuf);
+void um_crop_area_set_min_size (UmCropArea *area,
+ gint width,
+ gint height);
+void um_crop_area_set_constrain_aspect (UmCropArea *area,
+ gboolean constrain);
+
+G_END_DECLS
+
+#endif /* _UM_CROP_AREA_H_ */
diff --git a/vapi/custom.vapi b/vapi/custom.vapi
index d947f9b..c046977 100644
--- a/vapi/custom.vapi
+++ b/vapi/custom.vapi
@@ -57,3 +57,15 @@ namespace Gtk {
[CCode (cname = "gtk_builder_add_from_resource")]
public static unowned uint my_builder_add_from_resource (Gtk.Builder builder, string path) throws GLib.Error;
}
+
+[CCode (cprefix = "Um", lower_case_cprefix = "um_", cheader_filename = "um-crop-area.h")]
+namespace Um {
+ public class CropArea : Gtk.DrawingArea {
+ [CCode (has_construct_function = false, type = "GtkWidget*")]
+ public CropArea ();
+ public void set_min_size (int width, int height);
+ public void set_constrain_aspect (bool constrain);
+ public void set_picture (Gdk.Pixbuf pixbuf);
+ public Gdk.Pixbuf get_picture ();
+ }
+}
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