void
SvgWindow::updateSvgContext ()
{
if (context)
{
finiTexture (context->texture[0]);
finiTexture (context->texture[1]);
}
else
{
context = new SvgContext;
if (!context)
return;
}
int x1, y1, x2, y2;
CompSize wSize;
initTexture (source, context->texture[1], context->size);
context->source = source;
wSize.setWidth (window->geometry ().width ());
wSize.setHeight (window->geometry ().height ());
decor_apply_gravity (source->p1.gravity,
source->p1.x, source->p1.y,
wSize.width (), wSize.height (),
&x1, &y1);
decor_apply_gravity (source->p2.gravity,
source->p2.x, source->p2.y,
wSize.width (), wSize.height (),
&x2, &y2);
x1 = MAX (x1, 0);
y1 = MAX (y1, 0);
x2 = MIN (x2, wSize.width ());
y2 = MIN (y2, wSize.height ());
if (!initTexture (source, context->texture[0], wSize))
{
delete context;
context = NULL;
}
else
{
renderSvg (source, context->texture[0], wSize, 0.0f, 0.0f, 1.0f, 1.0f);
initTexture (source, context->texture[1], CompSize ());
context->box += CompRect (x1, y1, x2 - x1, y2 - y1);
context->box.translate (window->geometry ().x (), window->geometry ().y ());
updateSvgMatrix ();
}
}
void
SvgWindow::renderSvg (SvgSource *source,
SvgTexture &texture,
CompSize size,
float x1,
float y1,
float x2,
float y2)
{
float w = x2 - x1;
float h = y2 - y1;
cairo_save (texture.cr);
cairo_set_operator (texture.cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (texture.cr, 1.0, 1.0, 1.0, 0.0);
cairo_paint (texture.cr);
cairo_set_operator (texture.cr, CAIRO_OPERATOR_OVER);
cairo_scale (texture.cr, 1.0 / w, 1.0 / h);
cairo_scale (texture.cr,
(double) size.width () / source->dimension.width,
(double) size.height () / source->dimension.height);
cairo_translate (texture.cr,
-x1 * source->dimension.width,
-y1 * source->dimension.height);
rsvg_handle_render_cairo (source->svg, texture.cr);
cairo_restore (texture.cr);
}
void
calculateWallOffset (const CompRect &output,
const CompPoint &offsetInScreenCoords,
const CompPoint &vpSize,
const CompSize &screenSize,
float &offsetInWorldX,
float &offsetInWorldY,
float &worldScaleFactorX,
float &worldScaleFactorY,
float animationProgress)
{
const float sx = screenSize.width () / static_cast <float> (output.width ());
const float sy = screenSize.height () / static_cast <float> (output.height ());
offsetInWorldX = 0.0;
offsetInWorldY = 0.0;
worldScaleFactorX = 1.0f;
worldScaleFactorY = 1.0f;
if (output.left () == 0)
{
offsetInWorldX = ((vpSize.x () * sx) / ((float) output.width ()) * (offsetInScreenCoords.x ()) * animationProgress);
worldScaleFactorX = 1.0f - ((float) (offsetInScreenCoords.x ()) / (float) (output.width ())) * animationProgress;
}
if (output.top () == 0)
{
offsetInWorldY = ((vpSize.y () * sy) / ((float) output.height ()) * (offsetInScreenCoords.y ()) * animationProgress);
worldScaleFactorY = 1.0f - ((float) (offsetInScreenCoords.y ()) / (float) output.height ()) * animationProgress;
}
}
bool
SvgWindow::initTexture (SvgSource *source,
SvgTexture &texture,
CompSize size)
{
Display *dpy = screen->dpy ();
texture.size = size;
texture.pixmap = None;
texture.cr = NULL;
if (size.width () && size.height ())
{
cairo_surface_t *surface;
XWindowAttributes attr;
XGetWindowAttributes (dpy, window->id (), &attr);
texture.pixmap = XCreatePixmap (dpy, screen->root (),
size.width (), size.height (),
attr.depth);
texture.textures =
GLTexture::bindPixmapToTexture (texture.pixmap,
size.width (), size.height (), attr.depth);
if (texture.textures.empty ())
{
compLogMessage ("svg", CompLogLevelInfo,
"Couldn't bind pixmap 0x%x to texture",
(int) texture.pixmap);
XFreePixmap (dpy, texture.pixmap);
return false;
}
surface = cairo_xlib_surface_create (dpy, texture.pixmap, attr.visual,
size.width (), size.height ());
texture.cr = cairo_create (surface);
cairo_surface_destroy (surface);
}
return true;
}
bool
WallScreen::checkDestination (unsigned int destX,
unsigned int destY)
{
CompPoint point;
CompSize size;
point = screen->vp ();
size = screen->vpSize ();
if (point.x () - destX >= (unsigned int) size.width ())
return false;
if (point.y () - destY >= (unsigned int) size.height ())
return false;
return true;
}
bool
GLFramebufferObject::allocate (const CompSize &size, const char *image,
GLenum format, GLenum type)
{
priv->status = -1;
if (!priv->glTex ||
size.width () != priv->glTex->width () ||
size.height () != priv->glTex->height ())
{
if (priv->glTex)
GLTexture::decRef (priv->glTex);
priv->glTex = NULL;
GLTexture::List list = GLTexture::imageDataToTexture (image, size,
format, type);
if (list.size () != 1 || list[0] == NULL)
return false;
priv->glTex = list[0];
GLTexture::incRef (priv->glTex);
if (GL::fboStencilSupported)
{
(*GL::bindRenderbuffer) (GL::RENDERBUFFER, priv->rbStencilId);
(*GL::renderbufferStorage) (GL::RENDERBUFFER, GL::DEPTH24_STENCIL8, size.width (), size.height ());
}
}
priv->pushFBO ();
(*GL::framebufferTexture2D) (GL::FRAMEBUFFER, GL::COLOR_ATTACHMENT0,
priv->glTex->target (),
priv->glTex->name (), 0);
priv->status = (*GL::checkFramebufferStatus) (GL::DRAW_FRAMEBUFFER);
priv->popFBO ();
return true;
}
bool
PngScreen::writePng (unsigned char *buffer,
std::ostream &file,
CompSize &size,
int stride)
{
png_struct *png;
png_info *info;
png_byte **rows;
png_color_16 white;
int i, height = size.height ();
rows = new png_byte *[height];
if (!rows)
return false;
for (i = 0; i < height; i++)
rows[height - i - 1] = buffer + i * stride;
png = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png)
{
delete [] rows;
return false;
}
info = png_create_info_struct (png);
if (!info)
{
png_destroy_write_struct (&png, NULL);
delete [] rows;
return false;
}
if (setjmp (png_jmpbuf (png)))
{
png_destroy_write_struct (&png, NULL);
delete [] rows;
return false;
}
png_set_write_fn (png, &file, stdioWriteFunc, NULL);
png_set_IHDR (png, info,
size.width (), size.height (), 8,
PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
white.red = 0xff;
white.blue = 0xff;
white.green = 0xff;
png_set_bKGD (png, info, &white);
png_write_info (png, info);
png_write_image (png, rows);
png_write_end (png, info);
png_destroy_write_struct (&png, &info);
delete [] rows;
return true;
}