rxvt-unicode/src/background.C

/*----------------------------------------------------------------------*
 * File:        background.C - former xpm.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 2005-2008 Marc Lehmann <schmorp@schmorp.de>
 * Copyright (c) 2007      Sasha Vasko <sasha@aftercode.net>
 * Copyright (c) 2010-2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *---------------------------------------------------------------------*/

#include "../config.h"          /* NECESSARY */
#include "rxvt.h"               /* NECESSARY */

#ifdef HAVE_BG_PIXMAP

void
rxvt_term::bg_destroy ()
{
# if ENABLE_TRANSPARENCY
  delete root_img;
  root_img = 0;
# endif

# if BG_IMAGE_FROM_FILE
  fimage.destroy ();
# endif

  delete bg_img;
  bg_img = 0;
}

bool
rxvt_term::bg_window_size_sensitive ()
{
# if ENABLE_TRANSPARENCY
  if (bg_flags & BG_IS_TRANSPARENT)
    return true;
# endif

# if BG_IMAGE_FROM_FILE
  if (fimage.img)
    {
      if ((fimage.flags & IM_IS_SIZE_SENSITIVE)
          || fimage.img->w > szHint.width
          || fimage.img->h > szHint.height)
        return true;
    }
# endif

  return false;
}

bool
rxvt_term::bg_window_position_sensitive ()
{
# if ENABLE_TRANSPARENCY
  if (bg_flags & BG_IS_TRANSPARENT)
    return true;
# endif

# if BG_IMAGE_FROM_FILE
  if (fimage.img)
    {
      if (fimage.flags & IM_ROOT_ALIGN)
        return true;
    }
# endif

  return false;
}

# if BG_IMAGE_FROM_FILE
static inline int
make_align_position (int align, int window_size, int image_size)
{
  if (align >= 0 && align <= 100)
    return lerp (0, window_size - image_size, align);
  else if (align > 100)
    return lerp (window_size - image_size, window_size, align - 100);
  else
    return lerp (-image_size, 0, align + 100);
}

static void
parse_style (const char *style, int &x, int &y, unsigned int &w, unsigned int &h, uint8_t &flags)
{
  if (!strcasecmp (style, "tiled"))
    {
      flags = IM_TILE;
      w = h = noScale;
      x = y = 0;
    }
  else if (!strcasecmp (style, "aspect-stretched"))
    {
      flags = IM_KEEP_ASPECT;
      w = h = windowScale;
      x = y = centerAlign;
    }
  else if (!strcasecmp (style, "stretched"))
    {
      flags = 0;
      w = h = windowScale;
      x = y = centerAlign;
    }
  else if (!strcasecmp (style, "centered"))
    {
      flags = 0;
      w = h = noScale;
      x = y = centerAlign;
    }
  else if (!strcasecmp (style, "root-tiled"))
    {
      flags = IM_TILE|IM_ROOT_ALIGN;
      w = h = noScale;
      x = y = 0;
    }
}

bool
rxvt_image::set_geometry (const char *geom, bool update)
{
  bool changed = false;
  int geom_flags = 0;
  int x = h_align;
  int y = v_align;
  unsigned int w = h_scale;
  unsigned int h = v_scale;
  uint8_t new_flags = 0;

  if (geom == NULL)
    return false;

  if (geom[0])
    {
      char **arr = rxvt_strsplit (':', geom);

      for (int i = 0; arr[i]; i++)
        {
          if (!strncasecmp (arr[i], "style=", 6))
            {
              parse_style (arr[i] + 6, x, y, w, h, new_flags);
              geom_flags = WidthValue|HeightValue|XValue|YValue;
            }
          else if (!strcasecmp (arr[i], "op=tile"))
            new_flags |= IM_TILE;
          else if (!strcasecmp (arr[i], "op=keep-aspect"))
            new_flags |= IM_KEEP_ASPECT;
          else if (!strcasecmp (arr[i], "op=root-align"))
            new_flags |= IM_ROOT_ALIGN;

          // deprecated
          else if (!strcasecmp (arr[i], "tile"))
            {
              new_flags |= IM_TILE;
              w = h = noScale;
              geom_flags |= WidthValue|HeightValue;
            }
          else if (!strcasecmp (arr[i], "propscale"))
            {
              new_flags |= IM_KEEP_ASPECT;
              w = h = windowScale;
              geom_flags |= WidthValue|HeightValue;
            }
          else if (!strcasecmp (arr[i], "hscale"))
            {
              new_flags |= IM_TILE;
              w = windowScale;
              h = noScale;
              geom_flags |= WidthValue|HeightValue;
            }
          else if (!strcasecmp (arr[i], "vscale"))
            {
              new_flags |= IM_TILE;
              h = windowScale;
              w = noScale;
              geom_flags |= WidthValue|HeightValue;
            }
          else if (!strcasecmp (arr[i], "scale"))
            {
              w = h = windowScale;
              geom_flags |= WidthValue|HeightValue;
            }
          else if (!strcasecmp (arr[i], "auto"))
            {
              w = h = windowScale;
              x = y = centerAlign;
              geom_flags |= WidthValue|HeightValue|XValue|YValue;
            }
          else if (!strcasecmp (arr[i], "root"))
            {
              new_flags |= IM_TILE|IM_ROOT_ALIGN;
              w = h = noScale;
              geom_flags |= WidthValue|HeightValue;
            }

          else
            geom_flags |= XParseGeometry (arr[i], &x, &y, &w, &h);
        } /* done parsing ops */

      rxvt_free_strsplit (arr);
    }

  new_flags |= flags & ~IM_GEOMETRY_FLAGS;

  if (!update)
    {
      if (!(geom_flags & XValue))
        x = y = defaultAlign;
      else if (!(geom_flags & YValue))
        y = x;

      if (!(geom_flags & (WidthValue|HeightValue)))
        w = h = defaultScale;
      else if (!(geom_flags & HeightValue))
        h = w;
      else if (!(geom_flags & WidthValue))
        w = h;
    }

  clamp_it (x, -100, 200);
  clamp_it (y, -100, 200);

  if (flags != new_flags
      || h_scale != w
      || v_scale != h
      || h_align != x
      || v_align != y)
    {
      flags = new_flags;
      h_scale = w;
      v_scale = h;
      h_align = x;
      v_align = y;
      changed = true;
    }

  if (is_size_sensitive ())
    flags |= IM_IS_SIZE_SENSITIVE;
  else
    flags &= ~IM_IS_SIZE_SENSITIVE;

  return changed;
}

void
rxvt_term::get_image_geometry (rxvt_image &image, int &w, int &h, int &x, int &y)
{
  int image_width = image.img->w;
  int image_height = image.img->h;
  int parent_width = szHint.width;
  int parent_height = szHint.height;
  int h_scale = min (image.h_scale, 32767 * 100 / parent_width);
  int v_scale = min (image.v_scale, 32767 * 100 / parent_height);

  w = h_scale * parent_width / 100;
  h = v_scale * parent_height / 100;

  if (image.flags & IM_KEEP_ASPECT)
    {
      float scale = (float)w / image_width;
      min_it (scale, (float)h / image_height);
      w = image_width * scale + 0.5;
      h = image_height * scale + 0.5;
    }

  if (!w) w = image_width;
  if (!h) h = image_height;

  if (image.flags & IM_ROOT_ALIGN)
    {
      x = -parent_x;
      y = -parent_y;
    }
  else
    {
      x = make_align_position (image.h_align, parent_width, w);
      y = make_align_position (image.v_align, parent_height, h);
    }
}

bool
rxvt_term::render_image (rxvt_image &image)
{
  int parent_width = szHint.width;
  int parent_height = szHint.height;

  int x = 0;
  int y = 0;
  int w = 0;
  int h = 0;

  get_image_geometry (image, w, h, x, y);

  if (!(image.flags & IM_ROOT_ALIGN)
      && (x >= parent_width
          || y >= parent_height
          || x + w <= 0
          || y + h <= 0))
    return false;

  rxvt_img *img = image.img->scale (w, h);

  if (image.flags & IM_TILE)
    img->repeat_mode (RepeatNormal);
  else
    img->repeat_mode (RepeatNone);
  img->sub_rect (-x, -y, parent_width, parent_height)->replace (img);

  if (bg_flags & BG_IS_VALID)
    {
      double factor = image.alpha * 1. / 0xffff;
      bg_img->blend (img, factor)->replace (img);
    }

  XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
  img->convert_format (format, pix_colors [Color_bg])->replace (img);

  delete bg_img;
  bg_img = img;

  return true;
}

rxvt_image::rxvt_image ()
{
  alpha = 0xffff;
  flags = 0;
  h_scale =
  v_scale = defaultScale;
  h_align =
  v_align = defaultAlign;

  img = 0;
}

bool
rxvt_image::set_file_geometry (rxvt_screen *s, const char *file)
{
  if (!file || !*file)
    return false;

  const char *p = strchr (file, ';');

  if (p)
    {
      size_t len = p - file;
      char *f = rxvt_temp_buf<char> (len + 1);
      memcpy (f, file, len);
      f[len] = '\0';
      file = f;
    }

  bool ret = set_file (s, file);
  alpha = 0x8000;
  if (ret)
    set_geometry (p ? p + 1 : "");
  return ret;
}

bool
rxvt_image::set_file (rxvt_screen *s, const char *file)
{
  delete img;
  img = rxvt_img::new_from_file (s, file);
  return img != 0;
}

# endif /* BG_IMAGE_FROM_FILE */

bool
image_effects::set_blur (const char *geom)
{
  bool changed = false;
  unsigned int hr, vr;
  int junk;
  int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);

  if (!(geom_flags & WidthValue))
    hr = 1;
  if (!(geom_flags & HeightValue))
    vr = hr;

  min_it (hr, 128);
  min_it (vr, 128);

  if (h_blurRadius != hr)
    {
      changed = true;
      h_blurRadius = hr;
    }

  if (v_blurRadius != vr)
    {
      changed = true;
      v_blurRadius = vr;
    }

  return changed;
}

bool
image_effects::set_tint (const rxvt_color &new_tint)
{
  if (!tint_set || tint != new_tint)
    {
      tint = new_tint;
      tint_set = true;

      return true;
    }

  return false;
}

bool
image_effects::set_shade (const char *shade_str)
{
  int new_shade = atoi (shade_str);

  clamp_it (new_shade, -100, 200);
  if (new_shade < 0)
    new_shade = 200 - (100 + new_shade);

  if (new_shade != shade)
    {
      shade = new_shade;
      return true;
    }

  return false;
}

# if ENABLE_TRANSPARENCY
/*
 * Builds a pixmap of the same size as the terminal window that contains
 * the tiled portion of the root pixmap that is supposed to be covered by
 * our window.
 */
bool
rxvt_term::render_root_image ()
{
  /* root dimensions may change from call to call - but Display structure should
   * be always up-to-date, so let's use it :
   */
  int screen = display->screen;
  int root_width = DisplayWidth (dpy, screen);
  int root_height = DisplayHeight (dpy, screen);
  int parent_width = szHint.width;
  int parent_height = szHint.height;
  int sx, sy;

  sx = parent_x;
  sy = parent_y;

  if (!root_img)
    return false;

  /* check if we are outside of the visible part of the virtual screen : */
  if (sx + parent_width <= 0 || sy + parent_height <= 0
      || sx >= root_width || sy >= root_height)
    return 0;

  while (sx < 0) sx += root_img->w;
  while (sy < 0) sy += root_img->h;

  rxvt_img *img = root_img->sub_rect (sx, sy, parent_width, parent_height);

  if (root_effects.need_blur ())
    img->blur (root_effects.h_blurRadius, root_effects.v_blurRadius)->replace (img);

  if (root_effects.need_tint ())
    tint_image (img, root_effects.tint, root_effects.tint_set, root_effects.shade);

  XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
  img->convert_format (format, pix_colors [Color_bg])->replace (img);

  delete bg_img;
  bg_img = img;

  return true;
}

void
rxvt_term::bg_set_root_pixmap ()
{
  delete root_img;
  root_img = rxvt_img::new_from_root (this);
}
# endif /* ENABLE_TRANSPARENCY */

void
rxvt_term::bg_render ()
{
  if (bg_flags & BG_INHIBIT_RENDER)
    return;

  bg_invalidate ();
# if ENABLE_TRANSPARENCY
  if (bg_flags & BG_IS_TRANSPARENT)
    {
      /*  we need to re-generate transparency pixmap in that case ! */
      if (render_root_image ())
        bg_flags |= BG_IS_VALID;
    }
# endif

# if BG_IMAGE_FROM_FILE
  if (fimage.img)
    {
      if (render_image (fimage))
        bg_flags |= BG_IS_VALID;
    }
# endif

  if (!(bg_flags & BG_IS_VALID))
    {
      delete bg_img;
      bg_img = 0;
    }

  scr_recolour (false);
  bg_flags |= BG_NEEDS_REFRESH;

  bg_valid_since = ev::now ();
}

void
rxvt_term::bg_init ()
{
#if BG_IMAGE_FROM_FILE
  if (rs[Rs_backgroundPixmap])
    {
      if (fimage.set_file_geometry (this, rs[Rs_backgroundPixmap])
          && !bg_window_position_sensitive ())
        update_background ();
    }
#endif
}

void
rxvt_term::tint_image (rxvt_img *img, rxvt_color &tint, bool tint_set, int shade)
{
  rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);

  if (tint_set)
    tint.get (c);

  if (shade > 100)
    {
      c.r = c.r * (200 - shade) / 100;
      c.g = c.g * (200 - shade) / 100;
      c.b = c.b * (200 - shade) / 100;
    }
  else
    {
      c.r = c.r * shade / 100;
      c.g = c.g * shade / 100;
      c.b = c.b * shade / 100;
    }

  img->contrast (c.r, c.g, c.b, c.a);

  if (shade > 100)
    {
      c.a = 0xffff;
      c.r =
      c.g =
      c.b = 0xffff * (shade - 100) / 100;
      img->brightness (c.r, c.g, c.b, c.a);
    }
}

#endif /* HAVE_BG_PIXMAP */
Revision:	1.240
Committed:	Mon Jun 11 13:23:01 2012 UTC (11 years, 11 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.239:	+17 -17 lines
Log Message:	Rename variables.
#	User	Rev	Content
1	sasha	1.1	/----------------------------------------------------------------------
2	ayin	1.4	* File: background.C - former xpm.C
3	sasha	1.1	----------------------------------------------------------------------
4			*
5			* All portions of code are copyright by their respective author/s.
6	root	1.147	* Copyright (c) 2005-2008 Marc Lehmann <schmorp@schmorp.de>
7	sasha	1.1	* Copyright (c) 2007 Sasha Vasko <sasha@aftercode.net>
8	sf-exg	1.209	* Copyright (c) 2010-2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
9	sasha	1.1	*
10			* This program is free software; you can redistribute it and/or modify
11			* it under the terms of the GNU General Public License as published by
12			* the Free Software Foundation; either version 2 of the License, or
13			* (at your option) any later version.
14			*
15			* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU General Public License for more details.
19			*
20			* You should have received a copy of the GNU General Public License
21			* along with this program; if not, write to the Free Software
22			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23			---------------------------------------------------------------------/
24
25			#include "../config.h" /* NECESSARY */
26			#include "rxvt.h" /* NECESSARY */
27
28			#ifdef HAVE_BG_PIXMAP
29	sf-exg	1.188
30	root	1.14	void
31	sf-exg	1.142	rxvt_term::bg_destroy ()
32	sasha	1.11	{
33	sf-exg	1.236	# if ENABLE_TRANSPARENCY
34			delete root_img;
35	root	1.237	root_img = 0;
36	sf-exg	1.236	# endif
37
38	root	1.232	# if BG_IMAGE_FROM_FILE
39	sf-exg	1.233	fimage.destroy ();
40	sf-exg	1.221	# endif
41
42	sf-exg	1.236	delete bg_img;
43	root	1.237	bg_img = 0;
44	sasha	1.11	}
45	sasha	1.2
46	sasha	1.1	bool
47	sf-exg	1.142	rxvt_term::bg_window_size_sensitive ()
48	sasha	1.1	{
49	root	1.232	# if ENABLE_TRANSPARENCY
50	sf-exg	1.143	if (bg_flags & BG_IS_TRANSPARENT)
51	sasha	1.13	return true;
52			# endif
53
54	root	1.232	# if BG_IMAGE_FROM_FILE
55	sf-exg	1.236	if (fimage.img)
56	sasha	1.1	{
57	sf-exg	1.233	if ((fimage.flags & IM_IS_SIZE_SENSITIVE)
58	sf-exg	1.236	\|\| fimage.img->w > szHint.width
59			\|\| fimage.img->h > szHint.height)
60	sasha	1.1	return true;
61			}
62			# endif
63	sasha	1.13
64			return false;
65			}
66
67	sf-exg	1.37	bool
68	sf-exg	1.142	rxvt_term::bg_window_position_sensitive ()
69	sasha	1.13	{
70	root	1.232	# if ENABLE_TRANSPARENCY
71	sf-exg	1.143	if (bg_flags & BG_IS_TRANSPARENT)
72	sasha	1.1	return true;
73			# endif
74	sasha	1.13
75	root	1.232	# if BG_IMAGE_FROM_FILE
76	sf-exg	1.236	if (fimage.img)
77	sasha	1.13	{
78	sf-exg	1.233	if (fimage.flags & IM_ROOT_ALIGN)
79	sasha	1.13	return true;
80			}
81			# endif
82
83	sasha	1.1	return false;
84	sf-exg	1.117	}
85	sasha	1.1
86	root	1.232	# if BG_IMAGE_FROM_FILE
87	sasha	1.1	static inline int
88			make_align_position (int align, int window_size, int image_size)
89			{
90	sf-exg	1.66	if (align >= 0 && align <= 100)
91	sf-exg	1.206	return lerp (0, window_size - image_size, align);
92	sf-exg	1.205	else if (align > 100)
93	sf-exg	1.206	return lerp (window_size - image_size, window_size, align - 100);
94	sf-exg	1.205	else
95	sf-exg	1.206	return lerp (-image_size, 0, align + 100);
96	sasha	1.1	}
97
98	sf-exg	1.219	static void
99			parse_style (const char *style, int &x, int &y, unsigned int &w, unsigned int &h, uint8_t &flags)
100			{
101			if (!strcasecmp (style, "tiled"))
102			{
103			flags = IM_TILE;
104			w = h = noScale;
105			x = y = 0;
106			}
107			else if (!strcasecmp (style, "aspect-stretched"))
108			{
109			flags = IM_KEEP_ASPECT;
110			w = h = windowScale;
111			x = y = centerAlign;
112			}
113			else if (!strcasecmp (style, "stretched"))
114			{
115			flags = 0;
116			w = h = windowScale;
117			x = y = centerAlign;
118			}
119			else if (!strcasecmp (style, "centered"))
120			{
121			flags = 0;
122			w = h = noScale;
123			x = y = centerAlign;
124			}
125			else if (!strcasecmp (style, "root-tiled"))
126			{
127			flags = IM_TILE\|IM_ROOT_ALIGN;
128			w = h = noScale;
129			x = y = 0;
130			}
131			}
132
133	sasha	1.1	bool
134	sf-exg	1.214	rxvt_image::set_geometry (const char *geom, bool update)
135	sasha	1.1	{
136	sf-exg	1.110	bool changed = false;
137			int geom_flags = 0;
138	sf-exg	1.198	int x = h_align;
139			int y = v_align;
140			unsigned int w = h_scale;
141			unsigned int h = v_scale;
142	sf-exg	1.219	uint8_t new_flags = 0;
143	sasha	1.1
144			if (geom == NULL)
145			return false;
146
147	sf-exg	1.163	if (geom[0])
148	sf-exg	1.122	{
149	sf-exg	1.163	char **arr = rxvt_strsplit (':', geom);
150	sf-exg	1.131
151	sf-exg	1.173	for (int i = 0; arr[i]; i++)
152	sasha	1.1	{
153	sf-exg	1.219	if (!strncasecmp (arr[i], "style=", 6))
154	sf-exg	1.160	{
155	sf-exg	1.219	parse_style (arr[i] + 6, x, y, w, h, new_flags);
156	sf-exg	1.160	geom_flags = WidthValue\|HeightValue\|XValue\|YValue;
157			}
158			else if (!strcasecmp (arr[i], "op=tile"))
159	sf-exg	1.214	new_flags \|= IM_TILE;
160	sf-exg	1.176	else if (!strcasecmp (arr[i], "op=keep-aspect"))
161	sf-exg	1.214	new_flags \|= IM_KEEP_ASPECT;
162	sf-exg	1.176	else if (!strcasecmp (arr[i], "op=root-align"))
163	sf-exg	1.214	new_flags \|= IM_ROOT_ALIGN;
164	sf-exg	1.160
165			// deprecated
166			else if (!strcasecmp (arr[i], "tile"))
167	sf-exg	1.122	{
168	sf-exg	1.214	new_flags \|= IM_TILE;
169	sf-exg	1.122	w = h = noScale;
170			geom_flags \|= WidthValue\|HeightValue;
171			}
172	sf-exg	1.133	else if (!strcasecmp (arr[i], "propscale"))
173	sf-exg	1.122	{
174	sf-exg	1.214	new_flags \|= IM_KEEP_ASPECT;
175	sf-exg	1.177	w = h = windowScale;
176			geom_flags \|= WidthValue\|HeightValue;
177	sf-exg	1.122	}
178	sf-exg	1.161	else if (!strcasecmp (arr[i], "hscale"))
179			{
180	sf-exg	1.214	new_flags \|= IM_TILE;
181	sf-exg	1.161	w = windowScale;
182			h = noScale;
183			geom_flags \|= WidthValue\|HeightValue;
184			}
185			else if (!strcasecmp (arr[i], "vscale"))
186			{
187	sf-exg	1.214	new_flags \|= IM_TILE;
188	sf-exg	1.161	h = windowScale;
189			w = noScale;
190			geom_flags \|= WidthValue\|HeightValue;
191			}
192	sf-exg	1.133	else if (!strcasecmp (arr[i], "scale"))
193	sf-exg	1.122	{
194	sf-exg	1.161	w = h = windowScale;
195	sf-exg	1.122	geom_flags \|= WidthValue\|HeightValue;
196			}
197	sf-exg	1.161	else if (!strcasecmp (arr[i], "auto"))
198			{
199			w = h = windowScale;
200			x = y = centerAlign;
201			geom_flags \|= WidthValue\|HeightValue\|XValue\|YValue;
202			}
203	sf-exg	1.133	else if (!strcasecmp (arr[i], "root"))
204	sf-exg	1.122	{
205	sf-exg	1.214	new_flags \|= IM_TILE\|IM_ROOT_ALIGN;
206	sf-exg	1.122	w = h = noScale;
207			geom_flags \|= WidthValue\|HeightValue;
208			}
209	sf-exg	1.163
210			else
211			geom_flags \|= XParseGeometry (arr[i], &x, &y, &w, &h);
212	sf-exg	1.131	} /* done parsing ops */
213	root	1.26
214	sf-exg	1.131	rxvt_free_strsplit (arr);
215	sf-exg	1.122	}
216	sasha	1.1
217	sf-exg	1.214	new_flags \|= flags & ~IM_GEOMETRY_FLAGS;
218	sf-exg	1.185
219	sf-exg	1.163	if (!update)
220			{
221			if (!(geom_flags & XValue))
222			x = y = defaultAlign;
223			else if (!(geom_flags & YValue))
224			y = x;
225
226			if (!(geom_flags & (WidthValue\|HeightValue)))
227			w = h = defaultScale;
228			else if (!(geom_flags & HeightValue))
229			h = w;
230			else if (!(geom_flags & WidthValue))
231			w = h;
232			}
233
234	sf-exg	1.198	clamp_it (x, -100, 200);
235			clamp_it (y, -100, 200);
236
237	sf-exg	1.214	if (flags != new_flags
238	sf-exg	1.198	\|\| h_scale != w
239			\|\| v_scale != h
240			\|\| h_align != x
241			\|\| v_align != y)
242	sasha	1.1	{
243	sf-exg	1.214	flags = new_flags;
244	sf-exg	1.198	h_scale = w;
245			v_scale = h;
246			h_align = x;
247			v_align = y;
248	sf-exg	1.110	changed = true;
249	sasha	1.1	}
250	root	1.26
251	sf-exg	1.225	if (is_size_sensitive ())
252	sf-exg	1.214	flags \|= IM_IS_SIZE_SENSITIVE;
253			else
254			flags &= ~IM_IS_SIZE_SENSITIVE;
255
256	sf-exg	1.110	return changed;
257	sasha	1.1	}
258
259	sf-exg	1.59	void
260	sf-exg	1.214	rxvt_term::get_image_geometry (rxvt_image &image, int &w, int &h, int &x, int &y)
261	sf-exg	1.59	{
262	sf-exg	1.236	int image_width = image.img->w;
263			int image_height = image.img->h;
264	sf-exg	1.240	int parent_width = szHint.width;
265			int parent_height = szHint.height;
266			int h_scale = min (image.h_scale, 32767 * 100 / parent_width);
267			int v_scale = min (image.v_scale, 32767 * 100 / parent_height);
268	sf-exg	1.59
269	sf-exg	1.240	w = h_scale * parent_width / 100;
270			h = v_scale * parent_height / 100;
271	sf-exg	1.164
272	sf-exg	1.214	if (image.flags & IM_KEEP_ASPECT)
273	sf-exg	1.62	{
274	sf-exg	1.164	float scale = (float)w / image_width;
275			min_it (scale, (float)h / image_height);
276	sf-exg	1.62	w = image_width * scale + 0.5;
277			h = image_height * scale + 0.5;
278			}
279	sf-exg	1.59
280	sf-exg	1.68	if (!w) w = image_width;
281			if (!h) h = image_height;
282
283	sf-exg	1.214	if (image.flags & IM_ROOT_ALIGN)
284	sf-exg	1.59	{
285	sf-exg	1.239	x = -parent_x;
286			y = -parent_y;
287	sf-exg	1.59	}
288	sf-exg	1.63	else
289			{
290	sf-exg	1.240	x = make_align_position (image.h_align, parent_width, w);
291			y = make_align_position (image.v_align, parent_height, h);
292	sf-exg	1.63	}
293	sf-exg	1.59	}
294
295	sf-exg	1.127	bool
296	sf-exg	1.215	rxvt_term::render_image (rxvt_image &image)
297	sf-exg	1.55	{
298	sf-exg	1.240	int parent_width = szHint.width;
299			int parent_height = szHint.height;
300	sf-exg	1.55
301			int x = 0;
302			int y = 0;
303	sf-exg	1.59	int w = 0;
304			int h = 0;
305	sf-exg	1.55
306	sf-exg	1.214	get_image_geometry (image, w, h, x, y);
307	sf-exg	1.55
308	sf-exg	1.214	if (!(image.flags & IM_ROOT_ALIGN)
309	sf-exg	1.240	&& (x >= parent_width
310			\|\| y >= parent_height
311	sf-exg	1.172	\|\| x + w <= 0
312			\|\| y + h <= 0))
313	sf-exg	1.55	return false;
314
315	sf-exg	1.236	rxvt_img *img = image.img->scale (w, h);
316	sf-exg	1.55
317	sf-exg	1.236	if (image.flags & IM_TILE)
318			img->repeat_mode (RepeatNormal);
319	sf-exg	1.152	else
320	sf-exg	1.236	img->repeat_mode (RepeatNone);
321	sf-exg	1.240	img->sub_rect (-x, -y, parent_width, parent_height)->replace (img);
322	sf-exg	1.154
323	sf-exg	1.236	if (bg_flags & BG_IS_VALID)
324	sf-exg	1.152	{
325	sf-exg	1.236	double factor = image.alpha * 1. / 0xffff;
326			bg_img->blend (img, factor)->replace (img);
327	sf-exg	1.152	}
328	sf-exg	1.79
329	sf-exg	1.236	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
330			img->convert_format (format, pix_colors [Color_bg])->replace (img);
331	sf-exg	1.55
332	sf-exg	1.236	delete bg_img;
333			bg_img = img;
334	sf-exg	1.55
335	sf-exg	1.236	return true;
336	sf-exg	1.55	}
337
338	sf-exg	1.220	rxvt_image::rxvt_image ()
339			{
340	sf-exg	1.224	alpha = 0xffff;
341			flags = 0;
342	sf-exg	1.220	h_scale =
343	sf-exg	1.224	v_scale = defaultScale;
344	sf-exg	1.220	h_align =
345	sf-exg	1.224	v_align = defaultAlign;
346	sf-exg	1.220
347	sf-exg	1.236	img = 0;
348	sf-exg	1.220	}
349
350	sasha	1.1	bool
351	sf-exg	1.236	rxvt_image::set_file_geometry (rxvt_screen s, const char file)
352	sasha	1.1	{
353	sf-exg	1.107	if (!file \|\| !*file)
354			return false;
355	sasha	1.1
356	sf-exg	1.167	const char *p = strchr (file, ';');
357
358			if (p)
359	sasha	1.1	{
360	sf-exg	1.107	size_t len = p - file;
361			char *f = rxvt_temp_buf<char> (len + 1);
362			memcpy (f, file, len);
363			f[len] = '\0';
364			file = f;
365			}
366	root	1.25
367	sf-exg	1.236	bool ret = set_file (s, file);
368	sf-exg	1.220	alpha = 0x8000;
369	sf-exg	1.224	if (ret)
370			set_geometry (p ? p + 1 : "");
371	sf-exg	1.220	return ret;
372			}
373
374			bool
375	sf-exg	1.236	rxvt_image::set_file (rxvt_screen s, const char file)
376	sf-exg	1.220	{
377	sf-exg	1.236	delete img;
378			img = rxvt_img::new_from_file (s, file);
379			return img != 0;
380	sasha	1.1	}
381
382	ayin	1.12	# endif /* BG_IMAGE_FROM_FILE */
383	sasha	1.1
384	ayin	1.10	bool
385	sf-exg	1.226	image_effects::set_blur (const char *geom)
386	sasha	1.1	{
387	sf-exg	1.110	bool changed = false;
388	sasha	1.1	unsigned int hr, vr;
389			int junk;
390			int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);
391
392	sf-exg	1.52	if (!(geom_flags & WidthValue))
393	sasha	1.1	hr = 1;
394	sf-exg	1.52	if (!(geom_flags & HeightValue))
395	sasha	1.1	vr = hr;
396
397	sf-exg	1.80	min_it (hr, 128);
398			min_it (vr, 128);
399
400	sasha	1.1	if (h_blurRadius != hr)
401			{
402	sf-exg	1.110	changed = true;
403	sasha	1.1	h_blurRadius = hr;
404			}
405
406			if (v_blurRadius != vr)
407			{
408	sf-exg	1.110	changed = true;
409	sasha	1.1	v_blurRadius = vr;
410			}
411	ayin	1.10
412	sf-exg	1.110	return changed;
413	sasha	1.1	}
414
415			bool
416	sf-exg	1.226	image_effects::set_tint (const rxvt_color &new_tint)
417	sasha	1.1	{
418	sf-exg	1.226	if (!tint_set \|\| tint != new_tint)
419	sasha	1.1	{
420			tint = new_tint;
421	sf-exg	1.226	tint_set = true;
422	sf-exg	1.203
423	sasha	1.1	return true;
424			}
425	root	1.20
426	sasha	1.1	return false;
427			}
428
429			bool
430	sf-exg	1.226	image_effects::set_shade (const char *shade_str)
431	sasha	1.1	{
432	sf-exg	1.186	int new_shade = atoi (shade_str);
433	sasha	1.1
434	sf-exg	1.75	clamp_it (new_shade, -100, 200);
435			if (new_shade < 0)
436	root	1.20	new_shade = 200 - (100 + new_shade);
437	sasha	1.1
438			if (new_shade != shade)
439			{
440			shade = new_shade;
441			return true;
442			}
443	root	1.20
444	sasha	1.1	return false;
445			}
446
447	root	1.232	# if ENABLE_TRANSPARENCY
448	sf-exg	1.149	/*
449	sf-exg	1.100	* Builds a pixmap of the same size as the terminal window that contains
450			* the tiled portion of the root pixmap that is supposed to be covered by
451	sasha	1.1	* our window.
452			*/
453	sf-exg	1.202	bool
454	sf-exg	1.228	rxvt_term::render_root_image ()
455	sasha	1.1	{
456	sf-exg	1.39	/* root dimensions may change from call to call - but Display structure should
457	sasha	1.1	* be always up-to-date, so let's use it :
458			*/
459	sf-exg	1.142	int screen = display->screen;
460	sasha	1.1	int root_width = DisplayWidth (dpy, screen);
461			int root_height = DisplayHeight (dpy, screen);
462	sf-exg	1.240	int parent_width = szHint.width;
463			int parent_height = szHint.height;
464	sasha	1.1	int sx, sy;
465
466	sf-exg	1.239	sx = parent_x;
467			sy = parent_y;
468	sasha	1.1
469	sf-exg	1.236	if (!root_img)
470			return false;
471
472	sasha	1.1	/* check if we are outside of the visible part of the virtual screen : */
473	sf-exg	1.240	if (sx + parent_width <= 0 \|\| sy + parent_height <= 0
474	sasha	1.1	\|\| sx >= root_width \|\| sy >= root_height)
475			return 0;
476
477	sf-exg	1.236	while (sx < 0) sx += root_img->w;
478			while (sy < 0) sy += root_img->h;
479	sf-exg	1.103
480	sf-exg	1.240	rxvt_img *img = root_img->sub_rect (sx, sy, parent_width, parent_height);
481	sf-exg	1.103
482	sf-exg	1.236	if (root_effects.need_blur ())
483			img->blur (root_effects.h_blurRadius, root_effects.v_blurRadius)->replace (img);
484	sf-exg	1.103
485	sf-exg	1.236	if (root_effects.need_tint ())
486			tint_image (img, root_effects.tint, root_effects.tint_set, root_effects.shade);
487	sf-exg	1.103
488	sf-exg	1.236	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
489			img->convert_format (format, pix_colors [Color_bg])->replace (img);
490	sf-exg	1.103
491	sf-exg	1.236	delete bg_img;
492			bg_img = img;
493	sf-exg	1.152
494	sf-exg	1.236	return true;
495	sasha	1.1	}
496
497	sf-exg	1.98	void
498	sf-exg	1.142	rxvt_term::bg_set_root_pixmap ()
499	sasha	1.1	{
500	sf-exg	1.236	delete root_img;
501			root_img = rxvt_img::new_from_root (this);
502	sasha	1.1	}
503			# endif /* ENABLE_TRANSPARENCY */
504
505	sf-exg	1.234	void
506	sf-exg	1.142	rxvt_term::bg_render ()
507	sasha	1.1	{
508	sf-exg	1.235	if (bg_flags & BG_INHIBIT_RENDER)
509			return;
510
511	sf-exg	1.142	bg_invalidate ();
512	root	1.232	# if ENABLE_TRANSPARENCY
513	sf-exg	1.143	if (bg_flags & BG_IS_TRANSPARENT)
514	sasha	1.1	{
515			/* we need to re-generate transparency pixmap in that case ! */
516	sf-exg	1.228	if (render_root_image ())
517	sf-exg	1.199	bg_flags \|= BG_IS_VALID;
518	sasha	1.1	}
519			# endif
520
521	root	1.232	# if BG_IMAGE_FROM_FILE
522	sf-exg	1.236	if (fimage.img)
523	sasha	1.1	{
524	sf-exg	1.233	if (render_image (fimage))
525	sf-exg	1.143	bg_flags \|= BG_IS_VALID;
526	sasha	1.1	}
527	sf-exg	1.46	# endif
528	sasha	1.7
529	sf-exg	1.143	if (!(bg_flags & BG_IS_VALID))
530	sasha	1.1	{
531	sf-exg	1.236	delete bg_img;
532			bg_img = 0;
533	sasha	1.1	}
534
535	sf-exg	1.142	scr_recolour (false);
536	sf-exg	1.143	bg_flags \|= BG_NEEDS_REFRESH;
537	sasha	1.1
538	sf-exg	1.142	bg_valid_since = ev::now ();
539	sasha	1.1	}
540
541	sf-exg	1.106	void
542	sf-exg	1.142	rxvt_term::bg_init ()
543	sasha	1.1	{
544	root	1.232	#if BG_IMAGE_FROM_FILE
545	sf-exg	1.220	if (rs[Rs_backgroundPixmap])
546			{
547	sf-exg	1.236	if (fimage.set_file_geometry (this, rs[Rs_backgroundPixmap])
548	sf-exg	1.233	&& !bg_window_position_sensitive ())
549			update_background ();
550	sf-exg	1.220	}
551			#endif
552	sasha	1.1	}
553
554	sf-exg	1.183	void
555	sf-exg	1.236	rxvt_term::tint_image (rxvt_img *img, rxvt_color &tint, bool tint_set, int shade)
556	sasha	1.1	{
557	sf-exg	1.194	rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
558	sf-exg	1.183
559	sf-exg	1.226	if (tint_set)
560	sf-exg	1.194	tint.get (c);
561	sf-exg	1.183
562	sf-exg	1.87	if (shade > 100)
563			{
564	sf-exg	1.184	c.r = c.r * (200 - shade) / 100;
565			c.g = c.g * (200 - shade) / 100;
566			c.b = c.b * (200 - shade) / 100;
567	sf-exg	1.87	}
568			else
569			{
570	sf-exg	1.184	c.r = c.r * shade / 100;
571			c.g = c.g * shade / 100;
572			c.b = c.b * shade / 100;
573	sf-exg	1.87	}
574	sasha	1.1
575	sf-exg	1.236	img->contrast (c.r, c.g, c.b, c.a);
576	sasha	1.1
577	sf-exg	1.236	if (shade > 100)
578	sf-exg	1.93	{
579	sf-exg	1.236	c.a = 0xffff;
580			c.r =
581			c.g =
582			c.b = 0xffff * (shade - 100) / 100;
583			img->brightness (c.r, c.g, c.b, c.a);
584	sasha	1.1	}
585			}
586	sf-exg	1.226
587			#endif /* HAVE_BG_PIXMAP */