From 5785144a718ffb3c3723949322871d51f7837e6d Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Tue, 8 Oct 2013 20:33:08 +0200
Subject: [PATCH] Experiments: First OSD without libxosd

Alas, the outlining algorithm (borrowed from libxosd) is very ugly...
---
 test.c | 39 +++++++++++++++++++++++++++++++--------
 1 file changed, 31 insertions(+), 8 deletions(-)

diff --git a/test.c b/test.c
index 676a1e5..dc3a3be 100644
--- a/test.c
+++ b/test.c
@@ -29,7 +29,8 @@ struct osd_state {
 
   // Xft stuff
   XftFont *font;
-  XftDraw *xft_draw;
+  XftDraw *mask_draw;
+  XftDraw *image_draw;
 };
 
 int
@@ -59,7 +60,7 @@ main(int argc, char **argv)
   osd->screen_height = XDisplayHeight(osd->dpy, osd->screen);
 
   XSetWindowAttributes win_attr = {
-    .override_redirect = 0,		// FIXME: 1
+    .override_redirect = 1,
   };
   osd->win = XCreateWindow(osd->dpy,
 	XRootWindow(osd->dpy, osd->screen),
@@ -85,7 +86,9 @@ main(int argc, char **argv)
   osd->mask_gc = XCreateGC(osd->dpy, osd->mask_bitmap, GCGraphicsExposures, &gcv);
 
   XSetBackground(osd->dpy, osd->gc, BlackPixel(osd->dpy, osd->screen));
-  XSetForeground(osd->dpy, osd->gc, BlackPixel(osd->dpy, osd->screen));
+  XColor shadow_color = { .red = 0xffff, .green = 0xffff, .blue = 0 };
+  XAllocColor(osd->dpy, osd->cmap, &shadow_color);
+  XSetForeground(osd->dpy, osd->gc, shadow_color.pixel);
 
   XSetBackground(osd->dpy, osd->mask_gc, WhitePixel(osd->dpy, osd->screen));
   XSetForeground(osd->dpy, osd->mask_gc, BlackPixel(osd->dpy, osd->screen));
@@ -94,12 +97,18 @@ main(int argc, char **argv)
 
   XFillRectangle(osd->dpy, osd->image_pixmap, osd->gc, 0, 0, osd->screen_width, osd->screen_height);
 
+  XFillRectangle(osd->dpy, osd->mask_bitmap, osd->mask_gc, 0, 0, osd->screen_width, osd->screen_height);
+
   osd->font = XftFontOpenName(osd->dpy, osd->screen, "times-64");
   if (!osd->font)
     die("Cannot open font");
 
-  osd->xft_draw = XftDrawCreate(osd->dpy, osd->image_pixmap, osd->visual, osd->cmap);
-  if (!osd->xft_draw)
+  osd->mask_draw = XftDrawCreateBitmap(osd->dpy, osd->mask_bitmap);
+  if (!osd->mask_draw)
+    die("Cannot create XftDraw");
+
+  osd->image_draw = XftDrawCreate(osd->dpy, osd->image_pixmap, osd->visual, osd->cmap);
+  if (!osd->image_draw)
     die("Cannot create XftDraw");
 
   XRenderColor xrc = { .red = 0, .green = 0xffff, .blue = 0, .alpha = 0xffff };
@@ -107,14 +116,28 @@ main(int argc, char **argv)
   if (!XftColorAllocValue(osd->dpy, osd->visual, osd->cmap, &xrc, &xfc))
     die("XftColorAllocValue failed");
   const unsigned char str[] = "Žluťoučká vlkodlačice";
-  XftDrawStringUtf8(osd->xft_draw, &xfc, osd->font, 100, 100, str, strlen((char *) str));
+  XftDrawStringUtf8(osd->image_draw, &xfc, osd->font, 100, 100, str, strlen((char *) str));
+
+  XRenderColor xrcm = { .red = 0xffff, .green = 0xffff, .blue = 0xffff, .alpha = 0xffff };
+  XftColor xfcm;
+  if (!XftColorAllocValue(osd->dpy, osd->visual, osd->cmap, &xrcm, &xfcm))
+    die("XftColorAllocValue failed");
+
+  // FIXME: This is very ugly!
+  XftDrawStringUtf8(osd->mask_draw, &xfcm, osd->font, 100, 100, str, strlen((char *) str));
+  for (int off=1; off<=2; off++)
+    for (int dir=0; dir<9; dir++)
+      if (dir != 4)
+	XftDrawStringUtf8(osd->mask_draw, &xfcm, osd->font, 100 + (dir/3 - 1) * off, 100 + (dir%3 - 1) * off, str, strlen((char *) str));
 
+#if 0
   XGlyphInfo gi;
   XftTextExtentsUtf8(osd->dpy, osd->font, str, strlen((char *) str), &gi);
   DBG("Glyph info: (%d,%d)+(%d,%d) off (%d,%d)\n", gi.x, gi.y, gi.width, gi.height, gi.xOff, gi.yOff);
-  XftDrawRect(osd->xft_draw, &xfc, 100 + gi.x, 100 - gi.y, gi.width, gi.height);
+  XftDrawRect(osd->image_draw, &xfc, 100 + gi.x, 100 - gi.y, gi.width, gi.height);
+#endif
 
-  XftDrawRect(osd->xft_draw, &xfc, 30, 30, 50, 50);
+  XShapeCombineMask(osd->dpy, osd->win, ShapeBounding, 0, 0, osd->mask_bitmap, ShapeSet);
 
   XSelectInput(osd->dpy, osd->win, ExposureMask);
   XMapRaised(osd->dpy, osd->win);
-- 
2.39.2