From 925fcf201ae850da169516a4c2a9102f1e3a0df4 Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Tue, 22 Dec 2009 23:08:43 +0100
Subject: Viewing images in the image box now works.

Images are resized to fit in the image box on the right hand side.
No further resizing is currently done unless the image is reloaded.
---
 window_main.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)

(limited to 'window_main.c')

diff --git a/window_main.c b/window_main.c
index bca438a..57c8885 100644
--- a/window_main.c
+++ b/window_main.c
@@ -1,10 +1,18 @@
 #include <string.h>
 
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
 #include "window_main.h"
 #include "walls_ui.h"
 #include "db.h"
 #include "walls_model.h"
 
+GdkPixbuf *pixbuf = NULL;
+
+GtkImage *image = NULL;
+
+void on_filetree_selection_changed(GtkTreeSelection *treeselection, gpointer user_data);
+
 inline static void filetree_create_model(GtkTreeView *filetree) {
 	GtkTreeModel *tree_model;
 
@@ -15,6 +23,7 @@ inline static void filetree_create_model(GtkTreeView *filetree) {
 inline static void filetree_init(GtkTreeView *filetree) {
 	GtkTreeViewColumn *col1, *col2, *col3, *col4;
 	GtkCellRenderer *renderer;
+	GtkTreeSelection *selection;
 
 	col1 = gtk_tree_view_column_new();
 	gtk_tree_view_column_set_title(col1, "Name");
@@ -49,6 +58,68 @@ inline static void filetree_init(GtkTreeView *filetree) {
 	gtk_tree_view_column_add_attribute(col4, renderer, "text", 3);
 
 	filetree_create_model(filetree);
+
+	selection = gtk_tree_view_get_selection(filetree);
+	g_signal_connect(selection, "changed", G_CALLBACK(on_filetree_selection_changed), filetree);
+}
+
+static void load_pixbuf(struct wallpaper_t *wall) {
+	GdkPixbuf *pb, *pb2;
+	GError *error = NULL;
+	GdkWindow *window;
+	gint win_width, win_height, img_width, img_height, width, height;
+	gdouble scalex, scaley, width_ratio, height_ratio, max_ratio;
+
+	pb = gdk_pixbuf_new_from_file(wall->filepath, &error);
+	if(!pb) {
+		g_warning("%s", error->message);
+		g_free(error);
+		return;
+	}
+
+	window = gtk_widget_get_window(GTK_WIDGET(image));
+	gdk_drawable_get_size(window, &win_width, &win_height);
+	img_width = gdk_pixbuf_get_width(pb);
+	img_height = gdk_pixbuf_get_height(pb);
+
+	/* do we need to resize? */
+	if(img_width > win_width || img_height > win_height) {
+		/* resize by width */
+		width_ratio = (gdouble)img_width / (gdouble)win_width;
+		height_ratio = (gdouble)img_height / (gdouble)win_height;
+		if(width_ratio > height_ratio) {
+			width = win_width;
+			height = (gint)(1.0 / width_ratio * img_height);
+			scalex = (gdouble)width / (gdouble)img_width;
+			scaley = (gdouble)height / (gdouble)img_height;
+		} else { /* resize by height */
+			height = win_height;
+			width = (gint)(1.0 / height_ratio * img_width);
+			scalex = (gdouble)width / (gdouble)img_width;
+			scaley = (gdouble)height / (gdouble)img_height;
+		}
+		pb2 = pb;
+		pb = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
+		gdk_pixbuf_scale(pb2, pb, 0, 0, width, height, 0, 0, scalex, scaley, GDK_INTERP_BILINEAR);
+		gdk_pixbuf_unref(pb2);
+	}
+
+	//gtk_image_set_from_file(image, wall->filepath);
+	gtk_image_set_from_pixbuf(image, pb);
+	gdk_pixbuf_unref(pb);
+}
+
+void on_filetree_selection_changed(GtkTreeSelection *treeselection, gpointer user_data) {
+	GtkTreeModel *model;
+	GtkTreeIter iter;
+	struct wallpaper_t *wall;
+
+	if(gtk_tree_selection_get_selected(treeselection, &model, &iter)) {
+		if(walls_model_get_record_type(model, &iter) == WALLS_MODEL_TYPE_WALL) {
+			walls_model_get_wall_record(model, &iter, &wall);
+			load_pixbuf(wall);
+		}
+	}
 }
 
 int gui_main(int argc, char **argv) {
@@ -75,6 +146,8 @@ int gui_main(int argc, char **argv) {
 	filetree = GTK_WIDGET(gtk_builder_get_object(builder, "filetree"));
 	filetree_init(GTK_TREE_VIEW(filetree));
 
+	image = GTK_IMAGE(gtk_builder_get_object(builder, "image"));
+
 	gtk_builder_connect_signals(builder, NULL);
 	
 	g_object_unref(G_OBJECT(builder));
-- 
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