Added image panning support, refactoring

1 files changed, 98 insertions, 0 deletions

diff --git a/window.c b/window.c
new file mode 100644
index 0000000..2d095c6
--- /dev/null
+++ b/window.c
@@ -0,0 +1,98 @@
+#include "window.h"
+#include "image.h"
+#include "input.h"
+#include <gtk-3.0/gtk/gtk.h>
+
+GtkWidget *window;
+GtkWidget *scrolled_window;
+
+static gboolean key_press(GtkWindow *window, GdkEvent *event, gpointer data)
+{
+    handle_key_press(event->key);
+    return FALSE;
+}
+
+static gboolean button_press(GtkWindow *window, GdkEvent *event, gpointer data)
+{
+    handle_button_press(event);
+    return TRUE;
+}
+
+static gboolean button_release(GtkWindow *window, GdkEvent *event,
+                               gpointer data)
+{
+    handle_button_release();
+    return TRUE;
+}
+
+static gboolean motion_notify(GtkWindow *window, GdkEvent *event, gpointer data)
+{
+    handle_mouse_move(event->motion.x, event->motion.y);
+    return TRUE;
+}
+
+static gboolean scroll_callback(GtkWindow *window, GdkEvent *event,
+                                gpointer data)
+{
+    handle_scroll(event);
+    return TRUE;
+}
+
+static gboolean configure_callback(GtkWindow *window, GdkEvent *event,
+                                   gpointer data)
+{
+    handle_resize();
+    return TRUE;
+}
+
+void create_main_window(GApplication *app)
+{
+    window = gtk_application_window_new(GTK_APPLICATION(app));
+    gtk_window_set_title(GTK_WINDOW(window), "qwe");
+    gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
+    g_signal_connect(G_OBJECT(window), "configure-event",
+                     G_CALLBACK(configure_callback), NULL);
+    g_signal_connect(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press),
+                     NULL);
+    g_signal_connect(G_OBJECT(window), "button-press-event",
+                     G_CALLBACK(button_press), NULL);
+    g_signal_connect(G_OBJECT(window), "button-release-event",
+                     G_CALLBACK(button_release), NULL);
+    g_signal_connect(G_OBJECT(window), "motion-notify-event",
+                     G_CALLBACK(motion_notify), NULL);
+    gtk_widget_add_events(GTK_WIDGET(window), GDK_SCROLL_MASK);
+    g_signal_connect(G_OBJECT(window), "scroll-event",
+                     G_CALLBACK(scroll_callback), NULL);
+
+    scrolled_window = gtk_scrolled_window_new(NULL, NULL);
+    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
+                                   GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+    gtk_container_add(GTK_CONTAINER(scrolled_window), GTK_WIDGET(new_image()));
+    gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(scrolled_window));
+    gtk_widget_show_all(GTK_WIDGET(window));
+}
+
+void scroll_window(gdouble x, gdouble y)
+{
+    GtkAdjustment *h_adj = gtk_scrolled_window_get_hadjustment(
+        GTK_SCROLLED_WINDOW(scrolled_window));
+    GtkAdjustment *v_adj = gtk_scrolled_window_get_vadjustment(
+        GTK_SCROLLED_WINDOW(scrolled_window));
+    gtk_adjustment_set_value(h_adj, gtk_adjustment_get_value(h_adj) + x);
+    gtk_adjustment_set_value(v_adj, gtk_adjustment_get_value(v_adj) + y);
+    gtk_scrolled_window_set_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window),
+                                        h_adj);
+    gtk_scrolled_window_set_vadjustment(GTK_SCROLLED_WINDOW(scrolled_window),
+                                        v_adj);
+}
+
+void get_curr_win_size(gint *width, gint *height)
+{
+    gtk_window_get_size(GTK_WINDOW(window), width, height);
+}
+
+void quit()
+{
+    g_application_quit(
+        G_APPLICATION(gtk_window_get_application(GTK_WINDOW(window))));
+}