59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
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#include <gtk/gtk.h>
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#include <iostream>
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gboolean press_key(GtkWidget *widget, GdkEventKey *event, gpointer data);
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gboolean click_mouse(GtkWidget *widget, GdkEventButton *event, gpointer data);
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gboolean draw_canvas(GtkWidget *widget, cairo_t *cairo, gpointer data);
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int main(int argc, char **argv)
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{
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GtkBuilder *builder;
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GObject *window;
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GError *error = nullptr;
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gtk_init(&argc, &argv);
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/* Construct a GtkBuilder instance and load our UI description */
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builder = gtk_builder_new();
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if(gtk_builder_add_from_file(builder, "main.ui", &error) == 0) {
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g_printerr("Error loading file: %s\n", error->message);
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g_clear_error(&error);
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return 1;
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}
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/* Connect signal handlers to the constructed widgets. */
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window = gtk_builder_get_object(builder, "MainWindow");
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g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
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gtk_main();
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g_object_unref(builder);
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return 0;
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}
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gboolean press_key(GtkWidget *, GdkEventKey *event, gpointer)
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{
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// see: https://developer.gnome.org/gdk3/stable/gdk3-Keyboard-Handling.html
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std::cout << gdk_keyval_name(event->keyval) << " was pressed.\n";
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return FALSE; // propagate the event
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}
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gboolean click_mouse(GtkWidget *, GdkEventButton *event, gpointer)
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{
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if(event->type == GDK_BUTTON_PRESS) {
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std::cout << "User clicked mouse at " << event->x << ", " << event->y << "\n";
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} else if(event->type == GDK_BUTTON_RELEASE) {
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std::cout << "User released mouse button at " << event->x << ", " << event->y << "\n";
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}
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return TRUE; // consume the event
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}
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gboolean draw_canvas(GtkWidget *, cairo_t *cairo, gpointer)
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{
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return FALSE; // propagate event
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}
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