webkit_linux.c

// GTK3 + WebKit2GTK implementation of the Linux frontend shim.
// Built only on Linux (the _linux.c suffix is an implicit build constraint).

#include <gtk/gtk.h>
#include <webkit2/webkit2.h>
#include "webkit.h"
#include "_cgo_export.h" // goOpenClicked(), goWinDestroy()

static GtkWidget *g_web = NULL;

static void on_open(GtkButton *b, gpointer u) {
	(void)b;
	(void)u;
	goOpenClicked();
}

static void on_destroy(GtkWidget *w, gpointer u) {
	(void)w;
	(void)u;
	goWinDestroy();
}

void mv_init(void) { gtk_init(NULL, NULL); }

void *mv_make_window(void) {
	GtkWidget *win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_title(GTK_WINDOW(win), "msgview");

	GtkWidget *vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
	gtk_container_add(GTK_CONTAINER(win), vbox);

	GtkWidget *bar = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 4);
	gtk_widget_set_margin_top(bar, 4);
	gtk_widget_set_margin_bottom(bar, 4);
	gtk_widget_set_margin_start(bar, 4);
	GtkWidget *open = gtk_button_new_with_label("Öffnen…");
	g_signal_connect(open, "clicked", G_CALLBACK(on_open), NULL);
	gtk_box_pack_start(GTK_BOX(bar), open, FALSE, FALSE, 0);
	gtk_box_pack_start(GTK_BOX(vbox), bar, FALSE, FALSE, 0);

	g_web = webkit_web_view_new();
	gtk_box_pack_start(GTK_BOX(vbox), g_web, TRUE, TRUE, 0);

	g_signal_connect(win, "destroy", G_CALLBACK(on_destroy), NULL);
	return win;
}

void *mv_webview(void) { return g_web; }

void mv_load_html(void *web, const char *html) {
	webkit_web_view_load_html(WEBKIT_WEB_VIEW((GtkWidget *)web), html, NULL);
}

void mv_set_title(void *win, const char *title) {
	gtk_window_set_title(GTK_WINDOW((GtkWidget *)win), title);
}

void mv_set_icon_name(void *win, const char *name) {
	gtk_window_set_icon_name(GTK_WINDOW((GtkWidget *)win), name);
}

void mv_set_default_size(void *win, int w, int h) {
	gtk_window_set_default_size(GTK_WINDOW((GtkWidget *)win), w, h);
}

void mv_move_resize(void *win, int x, int y, int w, int h) {
	GtkWindow *gw = GTK_WINDOW((GtkWidget *)win);
	gtk_window_resize(gw, w, h);
	gtk_window_move(gw, x, y);
}

int mv_get_x(void *win) {
	int x = 0, y = 0;
	gtk_window_get_position(GTK_WINDOW((GtkWidget *)win), &x, &y);
	return x;
}
int mv_get_y(void *win) {
	int x = 0, y = 0;
	gtk_window_get_position(GTK_WINDOW((GtkWidget *)win), &x, &y);
	return y;
}
int mv_get_w(void *win) {
	int w = 0, h = 0;
	gtk_window_get_size(GTK_WINDOW((GtkWidget *)win), &w, &h);
	return w;
}
int mv_get_h(void *win) {
	int w = 0, h = 0;
	gtk_window_get_size(GTK_WINDOW((GtkWidget *)win), &w, &h);
	return h;
}

static void mv_workarea(GdkRectangle *r) {
	GdkDisplay *d = gdk_display_get_default();
	GdkMonitor *m = d ? gdk_display_get_primary_monitor(d) : NULL;
	if (!m && d)
		m = gdk_display_get_monitor(d, 0);
	if (m) {
		gdk_monitor_get_workarea(m, r);
	} else {
		r->x = 0;
		r->y = 0;
		r->width = 1024;
		r->height = 768;
	}
}

int mv_workarea_w(void) {
	GdkRectangle r;
	mv_workarea(&r);
	return r.width;
}
int mv_workarea_h(void) {
	GdkRectangle r;
	mv_workarea(&r);
	return r.height;
}

void mv_show(void *win) { gtk_widget_show_all((GtkWidget *)win); }
void mv_main(void) { gtk_main(); }
void mv_quit(void) { gtk_main_quit(); }

char *mv_open_dialog(void *win) {
	GtkFileChooserNative *d = gtk_file_chooser_native_new(
	    "Nachricht öffnen", GTK_WINDOW((GtkWidget *)win),
	    GTK_FILE_CHOOSER_ACTION_OPEN, "_Öffnen", "_Abbrechen");

	GtkFileFilter *f = gtk_file_filter_new();
	gtk_file_filter_set_name(f, "E-Mail (*.msg, *.eml)");
	gtk_file_filter_add_pattern(f, "*.msg");
	gtk_file_filter_add_pattern(f, "*.eml");
	gtk_file_filter_add_pattern(f, "*.MSG");
	gtk_file_filter_add_pattern(f, "*.EML");
	gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(d), f);

	char *res = NULL;
	if (gtk_native_dialog_run(GTK_NATIVE_DIALOG(d)) == GTK_RESPONSE_ACCEPT)
		res = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(d));
	g_object_unref(d);
	return res;
}

void mv_free(void *p) { g_free(p); }