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openbox/obrender/render.c

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/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
render.c for the Openbox window manager
Copyright (c) 2006 Mikael Magnusson
Copyright (c) 2003-2007 Dana Jansens
Copyright (c) 2003 Derek Foreman
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.
See the COPYING file for a copy of the GNU General Public License.
*/
#include "render.h"
#include "gradient.h"
#include "font.h"
#include "mask.h"
#include "color.h"
#include "image.h"
#include "theme.h"
#include <glib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xft/Xft.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#endif
static void pixel_data_to_pixmap(RrAppearance *l,
gint x, gint y, gint w, gint h);
Pixmap RrPaintPixmap(RrAppearance *a, gint w, gint h)
{
gint i, transferred = 0, force_transfer = 0;
Pixmap oldp = None;
RrRect tarea; /* area in which to draw textures */
gboolean resized;
if (w <= 0 || h <= 0) return None;
if (a->surface.parentx < 0 || a->surface.parenty < 0) {
/* ob_debug("Invalid parent co-ordinates\n"); */
return None;
}
if (a->surface.grad == RR_SURFACE_PARENTREL &&
(a->surface.parentx >= a->surface.parent->w ||
a->surface.parenty >= a->surface.parent->h))
{
return None;
}
resized = (a->w != w || a->h != h);
oldp = a->pixmap; /* save to free after changing the visible pixmap */
a->pixmap = XCreatePixmap(RrDisplay(a->inst),
RrRootWindow(a->inst),
w, h, RrDepth(a->inst));
g_assert(a->pixmap != None);
a->w = w;
a->h = h;
if (a->xftdraw != NULL)
XftDrawDestroy(a->xftdraw);
a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
RrVisual(a->inst), RrColormap(a->inst));
g_assert(a->xftdraw != NULL);
if (resized) {
g_free(a->surface.pixel_data);
a->surface.pixel_data = g_new(RrPixel32, w * h);
}
RrRender(a, w, h);
{
gint l, t, r, b;
RrMargins(a, &l, &t, &r, &b);
RECT_SET(tarea, l, t, w - l - r, h - t - b);
}
for (i = 0; i < a->textures; i++) {
switch (a->texture[i].type) {
case RR_TEXTURE_NONE:
break;
case RR_TEXTURE_TEXT:
if (!transferred) {
transferred = 1;
if ((a->surface.grad != RR_SURFACE_SOLID)
|| (a->surface.interlaced))
pixel_data_to_pixmap(a, 0, 0, w, h);
}
if (a->xftdraw == NULL) {
a->xftdraw = XftDrawCreate(RrDisplay(a->inst), a->pixmap,
RrVisual(a->inst),
RrColormap(a->inst));
}
RrFontDraw(a->xftdraw, &a->texture[i].data.text, &tarea);
break;
case RR_TEXTURE_LINE_ART:
if (!transferred) {
transferred = 1;
if ((a->surface.grad != RR_SURFACE_SOLID)
|| (a->surface.interlaced))
pixel_data_to_pixmap(a, 0, 0, w, h);
}
XDrawLine(RrDisplay(a->inst), a->pixmap,
RrColorGC(a->texture[i].data.lineart.color),
a->texture[i].data.lineart.x1,
a->texture[i].data.lineart.y1,
a->texture[i].data.lineart.x2,
a->texture[i].data.lineart.y2);
break;
case RR_TEXTURE_MASK:
if (!transferred) {
transferred = 1;
if ((a->surface.grad != RR_SURFACE_SOLID)
|| (a->surface.interlaced))
pixel_data_to_pixmap(a, 0, 0, w, h);
}
RrPixmapMaskDraw(a->pixmap, &a->texture[i].data.mask, &tarea);
break;
case RR_TEXTURE_IMAGE:
g_assert(!transferred);
{
RrRect narea = tarea;
RrTextureImage *img = &a->texture[i].data.image;
narea.x += img->tx;
narea.width -= img->tx;
narea.y += img->ty;
narea.height -= img->ty;
if (img->twidth)
narea.width = MIN(narea.width, img->twidth);
if (img->theight)
narea.height = MIN(narea.height, img->theight);
RrImageDrawImage(a->surface.pixel_data,
&a->texture[i].data.image,
a->w, a->h,
&narea);
}
force_transfer = 1;
break;
case RR_TEXTURE_RGBA:
g_assert(!transferred);
{
RrRect narea = tarea;
RrTextureRGBA *rgb = &a->texture[i].data.rgba;
narea.x += rgb->tx;
narea.width -= rgb->tx;
narea.y += rgb->ty;
narea.height -= rgb->ty;
if (rgb->twidth)
narea.width = MIN(narea.width, rgb->twidth);
if (rgb->theight)
narea.height = MIN(narea.height, rgb->theight);
RrImageDrawRGBA(a->surface.pixel_data,
&a->texture[i].data.rgba,
a->w, a->h,
&narea);
}
force_transfer = 1;
break;
case RR_TEXTURE_NUM_TYPES:
g_assert_not_reached();
}
}
if (!transferred) {
transferred = 1;
if ((a->surface.grad != RR_SURFACE_SOLID) || (a->surface.interlaced) ||
force_transfer)
{
pixel_data_to_pixmap(a, 0, 0, w, h);
}
}
return oldp;
}
void RrPaint(RrAppearance *a, Window win, gint w, gint h)
{
Pixmap oldp;
oldp = RrPaintPixmap(a, w, h);
XSetWindowBackgroundPixmap(RrDisplay(a->inst), win, a->pixmap);
XClearWindow(RrDisplay(a->inst), win);
/* free this after changing the visible pixmap */
if (oldp) XFreePixmap(RrDisplay(a->inst), oldp);
}
RrAppearance *RrAppearanceNew(const RrInstance *inst, gint numtex)
{
RrAppearance *out;
out = g_slice_new0(RrAppearance);
out->inst = inst;
out->textures = numtex;
out->surface.bevel_light_adjust = 128;
out->surface.bevel_dark_adjust = 64;
if (numtex) out->texture = g_new0(RrTexture, numtex);
return out;
}
void RrAppearanceRemoveTextures(RrAppearance *a)
{
g_free(a->texture);
a->textures = 0;
}
void RrAppearanceAddTextures(RrAppearance *a, gint numtex)
{
g_assert(a->textures == 0);
a->textures = numtex;
if (numtex) a->texture = g_new0(RrTexture, numtex);
}
void RrAppearanceClearTextures(RrAppearance *a)
{
memset(a->texture, 0, a->textures * sizeof(RrTexture));
}
/* deep copy of orig, means reset ref to 1 on copy
* and copy each thing memwise. */
RrAppearance *RrAppearanceCopy(RrAppearance *orig)
{
RrSurface *spo, *spc;
RrAppearance *copy = g_slice_new(RrAppearance);
copy->inst = orig->inst;
spo = &(orig->surface);
spc = &(copy->surface);
spc->grad = spo->grad;
spc->relief = spo->relief;
spc->bevel = spo->bevel;
if (spo->primary != NULL)
spc->primary = RrColorNew(copy->inst,
spo->primary->r,
spo->primary->g,
spo->primary->b);
else spc->primary = NULL;
if (spo->secondary != NULL)
spc->secondary = RrColorNew(copy->inst,
spo->secondary->r,
spo->secondary->g,
spo->secondary->b);
else spc->secondary = NULL;
if (spo->border_color != NULL)
spc->border_color = RrColorNew(copy->inst,
spo->border_color->r,
spo->border_color->g,
spo->border_color->b);
else spc->border_color = NULL;
if (spo->interlace_color != NULL)
spc->interlace_color = RrColorNew(copy->inst,
spo->interlace_color->r,
spo->interlace_color->g,
spo->interlace_color->b);
else spc->interlace_color = NULL;
if (spo->bevel_dark != NULL)
spc->bevel_dark = RrColorNew(copy->inst,
spo->bevel_dark->r,
spo->bevel_dark->g,
spo->bevel_dark->b);
else spc->bevel_dark = NULL;
if (spo->bevel_light != NULL)
spc->bevel_light = RrColorNew(copy->inst,
spo->bevel_light->r,
spo->bevel_light->g,
spo->bevel_light->b);
else spc->bevel_light = NULL;
if (spo->split_primary != NULL)
spc->split_primary = RrColorNew(copy->inst,
spo->split_primary->r,
spo->split_primary->g,
spo->split_primary->b);
else spc->split_primary = NULL;
if (spo->split_secondary != NULL)
spc->split_secondary = RrColorNew(copy->inst,
spo->split_secondary->r,
spo->split_secondary->g,
spo->split_secondary->b);
else spc->split_secondary = NULL;
spc->interlaced = spo->interlaced;
spc->bevel_light_adjust = spo->bevel_light_adjust;
spc->bevel_dark_adjust = spo->bevel_dark_adjust;
spc->border = spo->border;
spc->parent = NULL;
spc->parentx = spc->parenty = 0;
spc->pixel_data = NULL;
copy->textures = orig->textures;
copy->texture = g_memdup(orig->texture,
orig->textures * sizeof(RrTexture));
copy->pixmap = None;
copy->xftdraw = NULL;
copy->w = copy->h = 0;
return copy;
}
/* now decrements ref counter, and frees only if ref <= 0 */
void RrAppearanceFree(RrAppearance *a)
{
if (a) {
RrSurface *p;
if (a->pixmap != None) XFreePixmap(RrDisplay(a->inst), a->pixmap);
if (a->xftdraw != NULL) XftDrawDestroy(a->xftdraw);
if (a->textures)
g_free(a->texture);
p = &a->surface;
RrColorFree(p->primary);
RrColorFree(p->secondary);
RrColorFree(p->border_color);
RrColorFree(p->interlace_color);
RrColorFree(p->bevel_dark);
RrColorFree(p->bevel_light);
RrColorFree(p->split_primary);
RrColorFree(p->split_secondary);
g_free(p->pixel_data);
p->pixel_data = NULL;
g_slice_free(RrAppearance, a);
}
}
static void pixel_data_to_pixmap(RrAppearance *l,
gint x, gint y, gint w, gint h)
{
RrPixel32 *in, *scratch;
Pixmap out;
XImage *im = NULL;
im = XCreateImage(RrDisplay(l->inst), RrVisual(l->inst), RrDepth(l->inst),
ZPixmap, 0, NULL, w, h, 32, 0);
g_assert(im != NULL);
in = l->surface.pixel_data;
out = l->pixmap;
/* this malloc is a complete waste of time on normal 32bpp
as reduce_depth just sets im->data = data and returns
*/
scratch = g_new(RrPixel32, im->width * im->height);
im->data = (gchar*) scratch;
RrReduceDepth(l->inst, in, im);
XPutImage(RrDisplay(l->inst), out,
DefaultGC(RrDisplay(l->inst), RrScreen(l->inst)),
im, 0, 0, x, y, w, h);
im->data = NULL;
XDestroyImage(im);
g_free(scratch);
}
void RrMargins (RrAppearance *a, gint *l, gint *t, gint *r, gint *b)
{
*l = *t = *r = *b = 0;
if (a->surface.grad != RR_SURFACE_PARENTREL) {
if (a->surface.relief != RR_RELIEF_FLAT) {
switch (a->surface.bevel) {
case RR_BEVEL_1:
*l = *t = *r = *b = 1;
break;
case RR_BEVEL_2:
*l = *t = *r = *b = 2;
break;
case RR_BEVEL_NUM_TYPES:
g_assert_not_reached();
}
} else if (a->surface.border) {
*l = *t = *r = *b = 1;
}
}
}
void RrMinSize(RrAppearance *a, gint *w, gint *h)
{
*w = RrMinWidth(a);
*h = RrMinHeight(a);
}
gint RrMinWidth(RrAppearance *a)
{
gint i;
RrSize *m;
gint l, t, r, b;
gint w = 0;
RrMargins(a, &l, &t, &r, &b);
for (i = 0; i < a->textures; ++i) {
switch (a->texture[i].type) {
case RR_TEXTURE_NONE:
break;
case RR_TEXTURE_MASK:
w = MAX(w, a->texture[i].data.mask.mask->width);
break;
case RR_TEXTURE_TEXT:
m = RrFontMeasureString(a->texture[i].data.text.font,
a->texture[i].data.text.string,
a->texture[i].data.text.shadow_offset_x,
a->texture[i].data.text.shadow_offset_y,
a->texture[i].data.text.flow,
a->texture[i].data.text.maxwidth);
w = MAX(w, m->width);
g_slice_free(RrSize, m);
break;
case RR_TEXTURE_RGBA:
w += MAX(w, a->texture[i].data.rgba.width);
break;
case RR_TEXTURE_IMAGE:
/* images resize so they don't contribute anything to the min */
break;
case RR_TEXTURE_LINE_ART:
w = MAX(w, MAX(a->texture[i].data.lineart.x1 - l - r,
a->texture[i].data.lineart.x2 - l - r));
break;
case RR_TEXTURE_NUM_TYPES:
g_assert_not_reached();
}
}
w += l + r;
if (w < 1) w = 1;
return w;
}
gint RrMinHeight(RrAppearance *a)
{
gint i;
gint l, t, r, b;
RrSize *m;
gint h = 0;
RrMargins(a, &l, &t, &r, &b);
for (i = 0; i < a->textures; ++i) {
switch (a->texture[i].type) {
case RR_TEXTURE_NONE:
break;
case RR_TEXTURE_MASK:
h = MAX(h, a->texture[i].data.mask.mask->height);
break;
case RR_TEXTURE_TEXT:
if (a->texture[i].data.text.flow) {
g_assert(a->texture[i].data.text.string != NULL);
m = RrFontMeasureString
(a->texture[i].data.text.font,
a->texture[i].data.text.string,
a->texture[i].data.text.shadow_offset_x,
a->texture[i].data.text.shadow_offset_y,
a->texture[i].data.text.flow,
a->texture[i].data.text.maxwidth);
h += MAX(h, m->height);
g_slice_free(RrSize, m);
}
else
h += MAX(h,
RrFontHeight
(a->texture[i].data.text.font,
a->texture[i].data.text.shadow_offset_y));
break;
case RR_TEXTURE_RGBA:
h += MAX(h, a->texture[i].data.rgba.height);
break;
case RR_TEXTURE_IMAGE:
/* images resize so they don't contribute anything to the min */
break;
case RR_TEXTURE_LINE_ART:
h = MAX(h, MAX(a->texture[i].data.lineart.y1 - t - b,
a->texture[i].data.lineart.y2 - t - b));
break;
case RR_TEXTURE_NUM_TYPES:
g_assert_not_reached();
}
}
h += t + b;
if (h < 1) h = 1;
return h;
}
static void reverse_bits(gchar *c, gint n)
{
gint i;
for (i = 0; i < n; i++, c++)
*c = (((*c * 0x0802UL & 0x22110UL) |
(*c * 0x8020UL & 0x88440UL)) * 0x10101UL) >> 16;
}
gboolean RrPixmapToRGBA(const RrInstance *inst,
Pixmap pmap, Pixmap mask,
gint *w, gint *h, RrPixel32 **data)
{
Window xr;
gint xx, xy;
guint pw, ph, mw, mh, xb, xd, i, x, y, di;
XImage *xi, *xm = NULL;
if (!XGetGeometry(RrDisplay(inst), pmap,
&xr, &xx, &xy, &pw, &ph, &xb, &xd))
return FALSE;
if (mask) {
if (!XGetGeometry(RrDisplay(inst), mask,
&xr, &xx, &xy, &mw, &mh, &xb, &xd))
return FALSE;
if (pw != mw || ph != mh || xd != 1)
return FALSE;
}
xi = XGetImage(RrDisplay(inst), pmap,
0, 0, pw, ph, 0xffffffff, ZPixmap);
if (!xi)
return FALSE;
if (mask) {
xm = XGetImage(RrDisplay(inst), mask,
0, 0, mw, mh, 0xffffffff, ZPixmap);
if (!xm) {
XDestroyImage(xi);
return FALSE;
}
if ((xm->bits_per_pixel == 1) && (xm->bitmap_bit_order != LSBFirst))
reverse_bits(xm->data, xm->bytes_per_line * xm->height);
}
if ((xi->bits_per_pixel == 1) && (xi->bitmap_bit_order != LSBFirst))
reverse_bits(xi->data, xi->bytes_per_line * xi->height);
*data = g_new(RrPixel32, pw * ph);
RrIncreaseDepth(inst, *data, xi);
if (mask) {
/* apply transparency from the mask */
di = 0;
for (i = 0, y = 0; y < ph; ++y) {
for (x = 0; x < pw; ++x, ++i) {
if (!((((unsigned)xm->data[di + x / 8]) >> (x % 8)) & 0x1))
(*data)[i] &= ~(0xff << RrDefaultAlphaOffset);
}
di += xm->bytes_per_line;
}
}
*w = pw;
*h = ph;
XDestroyImage(xi);
if (mask)
XDestroyImage(xm);
return TRUE;
}
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