/* Compares two CAIRO_FORMAT_ARGB32 buffers, returning NULL if the
* buffers are equal or a surface containing a diff between the two
* surfaces.
*
* This function should be rewritten to compare all formats supported by
* cairo_format_t instead of taking a mask as a parameter.
*
* This function is originally from cairo:test/buffer-diff.c.
* Copyright © 2004 Richard D. Worth
*/
static cairo_surface_t *
buffer_diff_core (const guchar *buf_a,
int stride_a,
const guchar *buf_b,
int stride_b,
int width,
int height)
{
int x, y;
guchar *buf_diff = NULL;
int stride_diff = 0;
cairo_surface_t *diff = NULL;
for (y = 0; y < height; y++)
{
const guint32 *row_a = (const guint32 *) (buf_a + y * stride_a);
const guint32 *row_b = (const guint32 *) (buf_b + y * stride_b);
guint32 *row = (guint32 *) (buf_diff + y * stride_diff);
for (x = 0; x < width; x++)
{
int channel;
guint32 diff_pixel = 0;
/* check if the pixels are the same */
if (row_a[x] == row_b[x])
continue;
if (diff == NULL)
{
diff = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
width,
height);
g_assert (cairo_surface_status (diff) == CAIRO_STATUS_SUCCESS);
buf_diff = cairo_image_surface_get_data (diff);
stride_diff = cairo_image_surface_get_stride (diff);
row = (guint32 *) (buf_diff + y * stride_diff);
}
/* calculate a difference value for all 4 channels */
for (channel = 0; channel < 4; channel++)
{
int value_a = (row_a[x] >> (channel*8)) & 0xff;
int value_b = (row_b[x] >> (channel*8)) & 0xff;
guint diff;
diff = ABS (value_a - value_b);
diff *= 4; /* emphasize */
if (diff)
diff += 128; /* make sure it's visible */
if (diff > 255)
diff = 255;
diff_pixel |= diff << (channel*8);
}
if ((diff_pixel & 0x00ffffff) == 0)
{
/* alpha only difference, convert to luminance */
guint8 alpha = diff_pixel >> 24;
diff_pixel = alpha * 0x010101;
}
row[x] = diff_pixel;
}
}
static PyObject *
image_surface_get_stride (PycairoImageSurface *o)
{
return PyInt_FromLong (cairo_image_surface_get_stride (o->surface));
}
void
setup_tile (gint w, gint h)
{
cairo_status_t status;
cairo_t* cr = NULL;
cairo_surface_t* cr_surf = NULL;
cairo_surface_t* tmp = NULL;
cairo_surface_t* dummy_surf = NULL;
cairo_surface_t* norm_surf = NULL;
cairo_surface_t* blur_surf = NULL;
gdouble width = (gdouble) w;
gdouble height = (gdouble) h;
raico_blur_t* blur = NULL;
cr_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE);
status = cairo_surface_status (cr_surf);
if (status != CAIRO_STATUS_SUCCESS)
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
cr = cairo_create (cr_surf);
status = cairo_status (cr);
if (status != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (cr_surf);
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
}
// clear and render drop-shadow and bubble-background
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
if (g_composited)
{
draw_shadow (cr,
width,
height,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
draw_round_rect (cr,
1.0f,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f* BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B,
0.95f);
}
else
cairo_set_source_rgb (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B);
draw_round_rect (cr,
1.0f,
BUBBLE_SHADOW_SIZE,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f * BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (cr_surf),
cairo_image_surface_get_format (cr_surf),
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (cr_surf));
dummy_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
norm_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, 6);
raico_blur_apply (blur, dummy_surf);
raico_blur_destroy (blur);
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
blur_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
cairo_surface_destroy (dummy_surf);
g_tile = tile_new_for_padding (norm_surf, blur_surf);
cairo_surface_destroy (norm_surf);
cairo_surface_destroy (blur_surf);
cairo_surface_destroy (cr_surf);
cairo_destroy (cr);
}
/*
* Arguments:
* 1) .node file to compare
* 2) .png file to compare the rendered .node file to
*/
int
main (int argc, char **argv)
{
cairo_surface_t *reference_surface = NULL;
cairo_surface_t *rendered_surface = NULL;
cairo_surface_t *diff_surface = NULL;
GdkTexture *texture;
GskRenderer *renderer;
GdkSurface *window;
GskRenderNode *node;
const char *node_file;
const char *png_file;
g_assert (argc == 3);
gtk_init ();
node_file = argv[1];
png_file = argv[2];
window = gdk_surface_new_toplevel (gdk_display_get_default(), 10 , 10);
renderer = gsk_renderer_new_for_surface (window);
g_test_message ("Node file: '%s'\n", node_file);
g_test_message ("PNG file: '%s'\n", png_file);
/* Load the render node from the given .node file */
{
GBytes *bytes;
GError *error = NULL;
gsize len;
char *contents;
if (!g_file_get_contents (node_file, &contents, &len, &error))
{
g_test_message ("Could not open node file: %s\n", error->message);
g_clear_error (&error);
g_test_fail ();
return -1;
}
bytes = g_bytes_new_take (contents, len);
node = gsk_render_node_deserialize (bytes, &error);
g_bytes_unref (bytes);
g_assert (node != NULL);
}
/* Render the .node file and download to cairo surface */
texture = gsk_renderer_render_texture (renderer, node, NULL);
g_assert (texture != NULL);
rendered_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
gdk_texture_get_width (texture),
gdk_texture_get_height (texture));
gdk_texture_download (texture,
cairo_image_surface_get_data (rendered_surface),
cairo_image_surface_get_stride (rendered_surface));
cairo_surface_mark_dirty (rendered_surface);
/* Load the given reference png file */
reference_surface = cairo_image_surface_create_from_png (png_file);
g_assert (reference_surface != NULL);
/* Now compare the two */
diff_surface = reftest_compare_surfaces (rendered_surface, reference_surface);
save_image (rendered_surface, node_file, ".out.png");
if (diff_surface)
save_image (diff_surface, node_file, ".diff.png");
g_assert (diff_surface == NULL);
return 0;
}
static void
st_drawing_area_paint (ClutterActor *self)
{
StDrawingArea *area = ST_DRAWING_AREA (self);
StDrawingAreaPrivate *priv = area->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
ClutterActorBox allocation_box;
ClutterActorBox content_box;
int width, height;
CoglColor color;
guint8 paint_opacity;
(CLUTTER_ACTOR_CLASS (st_drawing_area_parent_class))->paint (self);
clutter_actor_get_allocation_box (self, &allocation_box);
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
width = (int)(0.5 + content_box.x2 - content_box.x1);
height = (int)(0.5 + content_box.y2 - content_box.y1);
if (priv->material == COGL_INVALID_HANDLE)
priv->material = cogl_material_new ();
if (priv->texture != COGL_INVALID_HANDLE &&
(width != cogl_texture_get_width (priv->texture) ||
height != cogl_texture_get_height (priv->texture)))
{
cogl_handle_unref (priv->texture);
priv->texture = COGL_INVALID_HANDLE;
}
if (width > 0 && height > 0)
{
if (priv->texture == COGL_INVALID_HANDLE)
{
priv->texture = st_cogl_texture_new_with_size_wrapper (width, height,
COGL_TEXTURE_NONE,
CLUTTER_CAIRO_FORMAT_ARGB32);
priv->needs_repaint = TRUE;
}
if (priv->needs_repaint)
{
cairo_surface_t *surface;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
priv->context = cairo_create (surface);
priv->in_repaint = TRUE;
priv->needs_repaint = FALSE;
g_signal_emit ((GObject*)area, st_drawing_area_signals[REPAINT], 0);
priv->in_repaint = FALSE;
cairo_destroy (priv->context);
priv->context = NULL;
cogl_texture_set_region (priv->texture, 0, 0, 0, 0, width, height, width, height,
CLUTTER_CAIRO_FORMAT_ARGB32,
cairo_image_surface_get_stride (surface),
cairo_image_surface_get_data (surface));
cairo_surface_destroy (surface);
}
}
cogl_material_set_layer (priv->material, 0, priv->texture);
if (priv->texture)
{
paint_opacity = clutter_actor_get_paint_opacity (self);
cogl_color_set_from_4ub (&color,
paint_opacity, paint_opacity, paint_opacity, paint_opacity);
cogl_material_set_color (priv->material, &color);
cogl_set_source (priv->material);
cogl_rectangle_with_texture_coords (content_box.x1, content_box.y1,
width, height,
0.0f, 0.0f, 1.0f, 1.0f);
}
}
void text_rsrc::updatePixels()
{
scoped_lock< mutex > slock( text_mutex );
text_update_context context;
// Set up Cairo then Pango with initial values /////////////////////////////////////////////////////////////////////////////////////////////////////////
if( max_dimensions[ 0 ] < 0 )
dimensions[ 0 ] = PANGOCAIRO_INITIAL_PX_WIDTH;
else
dimensions[ 0 ] = max_dimensions[ 0 ];
if( max_dimensions[ 1 ] < 0 )
dimensions[ 1 ] = PANGOCAIRO_INITIAL_PX_HEIGHT;
else
dimensions[ 1 ] = max_dimensions[ 1 ];
updatePixels_setup( &context );
// Redo everything if we need to resize ////////////////////////////////////////////////////////////////////////////////////////////////////////////////
if( max_dimensions[ 0 ] < 0
|| max_dimensions[ 1 ] < 0 )
{
// Get Pango pixel dimensions //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
PangoRectangle p_layout_inkrect;
pango_layout_get_extents( context.p_layout,
&p_layout_inkrect,
NULL );
// Make sure we have enough room
dimensions[ 0 ] = ceil( ( double )( p_layout_inkrect.width + p_layout_inkrect.x ) / PANGO_SCALE );
dimensions[ 1 ] = ceil( ( double )( p_layout_inkrect.height + p_layout_inkrect.y ) / PANGO_SCALE );
// Clean up Pango then Cairo ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
updatePixels_cleanup( &context );
// Re-set up Cairo then Pango with actual values ///////////////////////////////////////////////////////////////////////////////////////////////////
updatePixels_setup( &context );
}
// Draw text to surface ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
pango_cairo_show_layout( context.c_context,
context.p_layout ); // Render text
tex_offset[ 0 ] = 0;
tex_offset[ 1 ] = pango_layout_get_baseline( context.p_layout ) / PANGO_SCALE * -1;
// Convert Cairo surface to RGBA for OpenGL ////////////////////////////////////////////////////////////////////////////////////////////////////////////
if( pixel_space != NULL )
delete[] pixel_space;
pixel_space = new unsigned char[ dimensions[ 0 ] * dimensions [ 1 ] * 4 ];
if( pixel_space == NULL )
throw exception( "text_rsrc::updatePixels(): Could not allocate pixel space" );
unsigned char* c_data = cairo_image_surface_get_data( context.c_surf );
int c_stride = cairo_image_surface_get_stride( context.c_surf );
unsigned char* c_pixelp;
for( long i = 0; i < dimensions[ 0 ] * dimensions[ 1 ]; ++i )
{
if( i % dimensions[ 0 ] == 0 )
c_pixelp = c_data + c_stride * ( i / dimensions[ 0 ] ); // Important since the surface stride might be wider than the surface width
pixel_space[ i * 4 + 0 ] = 0xFF;
pixel_space[ i * 4 + 1 ] = 0xFF;
pixel_space[ i * 4 + 2 ] = 0xFF;
pixel_space[ i * 4 + 3 ] = c_pixelp[ i % dimensions[ 0 ] ];
}
// Clean up Pango then Cairo ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
updatePixels_cleanup( &context );
}
void
blur_surface(cairo_surface_t *surface, int margin)
{
cairo_surface_t *tmp;
int32_t width, height, stride, x, y, z, w;
uint8_t *src, *dst;
uint32_t *s, *d, a, p;
int i, j, k, size = 17, half;
uint8_t kernel[100];
double f;
width = cairo_image_surface_get_width(surface);
height = cairo_image_surface_get_height(surface);
stride = cairo_image_surface_get_stride(surface);
src = cairo_image_surface_get_data(surface);
tmp = cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height);
dst = cairo_image_surface_get_data(tmp);
half = size / 2;
a = 0;
for (i = 0; i < size; i++) {
f = (i - half);
kernel[i] = exp(- f * f / 30.0) * 80;
a += kernel[i];
}
for (i = 0; i < height; i++) {
s = (uint32_t *) (src + i * stride);
d = (uint32_t *) (dst + i * stride);
for (j = 0; j < width; j++) {
if (margin < j && j < width - margin &&
margin < i && i < height - margin)
continue;
x = 0;
y = 0;
z = 0;
w = 0;
for (k = 0; k < size; k++) {
if (j - half + k < 0 || j - half + k >= width)
continue;
p = s[j - half + k];
x += (p >> 24) * kernel[k];
y += ((p >> 16) & 0xff) * kernel[k];
z += ((p >> 8) & 0xff) * kernel[k];
w += (p & 0xff) * kernel[k];
}
d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
}
}
for (i = 0; i < height; i++) {
s = (uint32_t *) (dst + i * stride);
d = (uint32_t *) (src + i * stride);
for (j = 0; j < width; j++) {
if (margin <= j && j < width - margin &&
margin <= i && i < height - margin)
continue;
x = 0;
y = 0;
z = 0;
w = 0;
for (k = 0; k < size; k++) {
if (i - half + k < 0 || i - half + k >= height)
continue;
s = (uint32_t *) (dst + (i - half + k) * stride);
p = s[j];
x += (p >> 24) * kernel[k];
y += ((p >> 16) & 0xff) * kernel[k];
z += ((p >> 8) & 0xff) * kernel[k];
w += (p & 0xff) * kernel[k];
}
d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
}
}
cairo_surface_destroy(tmp);
}
QImage QImageProvider::requestImage(const QString &id, QSize *size, const QSize &requestedSize)
{
Q_UNUSED(size);
QUrl dir(id);
RsvgDimensionData dimensions;
int width = 1;
int height = 1;
/* Set the locale so that UTF-8 filenames work */
setlocale(LC_ALL, "");
double zoom = 1.0;
rsvg_set_default_dpi_x_y (-1, -1);
RsvgHandle *rsvg = rsvg_handle_new_from_file(dir.toLocalFile().toStdString().c_str(),NULL);
if(rsvg!=NULL)
{
rsvg_handle_get_dimensions(rsvg, &dimensions);
QRect desktop = QRect(0,0,requestedSize.width(),requestedSize.height());
if(dimensions.width!=dimensions.height)
{
width = (dimensions.width<dimensions.height) ? (double)desktop.height() / (double)dimensions.height * dimensions.width : desktop.width() ;
height = (dimensions.height<dimensions.width) ? (double)desktop.width() / (double)dimensions.width * dimensions.height : desktop.height() ;
zoom = (width > height) ? (double)width / (double)dimensions.width : (double)height / (double)dimensions.height;
}
else if(desktop.width() > desktop.height())
{
width = desktop.height();
height = desktop.height();
zoom = (double)height / (double)dimensions.height;
}
else
{
width = desktop.width();
height = desktop.width();
zoom = (double)width / (double)dimensions.width;
}
qDebug() << width << "x" << height << ";" << dimensions.width << "x" << dimensions.height << ";" << zoom;
}
cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
cairo_t *cr = cairo_create(surface);
cairo_scale(cr, zoom, zoom);
rsvg_handle_render_cairo(rsvg, cr);
QImage *source = new QImage(
cairo_image_surface_get_data(surface),
cairo_image_surface_get_width(surface),
cairo_image_surface_get_height(surface),
cairo_image_surface_get_stride(surface),
QImage::Format_ARGB32_Premultiplied
);
QImage image(cairo_image_surface_get_width(surface), cairo_image_surface_get_height(surface), QImage::Format_ARGB32_Premultiplied);
image.fill(qRgba(0, 0, 0, 0));
QPainter painter(&image);
painter.drawImage(QPoint(0, 0), *source);
delete source;
g_object_unref(rsvg);
cairo_destroy(cr);
cairo_surface_destroy(surface);
return image;
}
/**
* gdk_cairo_draw_from_gl:
* @cr: a cairo context
* @window: The window we're rendering for (not necessarily into)
* @source: The GL ID of the source buffer
* @source_type: The type of the @source
* @buffer_scale: The scale-factor that the @source buffer is allocated for
* @x: The source x position in @source to start copying from in GL coordinates
* @y: The source y position in @source to start copying from in GL coordinates
* @width: The width of the region to draw
* @height: The height of the region to draw
*
* This is the main way to draw GL content in GTK+. It takes a render buffer ID
* (@source_type == #GL_RENDERBUFFER) or a texture id (@source_type == #GL_TEXTURE)
* and draws it onto @cr with an OVER operation, respecting the current clip.
* The top left corner of the rectangle specified by @x, @y, @width and @height
* will be drawn at the current (0,0) position of the cairo_t.
*
* This will work for *all* cairo_t, as long as @window is realized, but the
* fallback implementation that reads back the pixels from the buffer may be
* used in the general case. In the case of direct drawing to a window with
* no special effects applied to @cr it will however use a more efficient
* approach.
*
* For #GL_RENDERBUFFER the code will always fall back to software for buffers
* with alpha components, so make sure you use #GL_TEXTURE if using alpha.
*
* Calling this may change the current GL context.
*
* Since: 3.16
*/
void
gdk_cairo_draw_from_gl (cairo_t *cr,
GdkWindow *window,
int source,
int source_type,
int buffer_scale,
int x,
int y,
int width,
int height)
{
GdkGLContext *paint_context;
cairo_surface_t *image;
cairo_matrix_t matrix;
int dx, dy, window_scale;
gboolean trivial_transform;
cairo_surface_t *group_target;
GdkWindow *direct_window, *impl_window;
guint framebuffer;
int alpha_size = 0;
cairo_region_t *clip_region;
GdkGLContextPaintData *paint_data;
impl_window = window->impl_window;
window_scale = gdk_window_get_scale_factor (impl_window);
paint_context = gdk_window_get_paint_gl_context (window, NULL);
if (paint_context == NULL)
{
g_warning ("gdk_cairo_draw_gl_render_buffer failed - no paint context");
return;
}
clip_region = gdk_cairo_region_from_clip (cr);
gdk_gl_context_make_current (paint_context);
paint_data = gdk_gl_context_get_paint_data (paint_context);
if (paint_data->tmp_framebuffer == 0)
glGenFramebuffersEXT (1, &paint_data->tmp_framebuffer);
if (source_type == GL_RENDERBUFFER)
{
glBindRenderbuffer (GL_RENDERBUFFER, source);
glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_ALPHA_SIZE, &alpha_size);
}
else if (source_type == GL_TEXTURE)
{
glBindTexture (GL_TEXTURE_2D, source);
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_ALPHA_SIZE, &alpha_size);
}
else
{
g_warning ("Unsupported gl source type %d\n", source_type);
return;
}
group_target = cairo_get_group_target (cr);
direct_window = cairo_surface_get_user_data (group_target, &direct_key);
cairo_get_matrix (cr, &matrix);
dx = matrix.x0;
dy = matrix.y0;
/* Trivial == integer-only translation */
trivial_transform =
(double)dx == matrix.x0 && (double)dy == matrix.y0 &&
matrix.xx == 1.0 && matrix.xy == 0.0 &&
matrix.yx == 0.0 && matrix.yy == 1.0;
/* For direct paint of non-alpha renderbuffer, we can
just do a bitblit */
if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_GL) == 0 &&
source_type == GL_RENDERBUFFER &&
alpha_size == 0 &&
direct_window != NULL &&
direct_window->current_paint.use_gl &&
trivial_transform &&
clip_region != NULL)
{
int unscaled_window_height;
int i;
/* Create a framebuffer with the source renderbuffer and
make it the current target for reads */
framebuffer = paint_data->tmp_framebuffer;
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer);
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, source);
glBindFramebufferEXT (GL_DRAW_FRAMEBUFFER_EXT, 0);
/* Translate to impl coords */
cairo_region_translate (clip_region, dx, dy);
glEnable (GL_SCISSOR_TEST);
gdk_window_get_unscaled_size (impl_window, NULL, &unscaled_window_height);
glDrawBuffer (GL_BACK);
#define FLIP_Y(_y) (unscaled_window_height - (_y))
for (i = 0; i < cairo_region_num_rectangles (clip_region); i++)
{
cairo_rectangle_int_t clip_rect, dest;
cairo_region_get_rectangle (clip_region, i, &clip_rect);
clip_rect.x *= window_scale;
clip_rect.y *= window_scale;
clip_rect.width *= window_scale;
clip_rect.height *= window_scale;
glScissor (clip_rect.x, FLIP_Y (clip_rect.y + clip_rect.height),
clip_rect.width, clip_rect.height);
dest.x = dx * window_scale;
dest.y = dy * window_scale;
dest.width = width * window_scale / buffer_scale;
dest.height = height * window_scale / buffer_scale;
if (gdk_rectangle_intersect (&clip_rect, &dest, &dest))
{
int clipped_src_x = x + (dest.x - dx * window_scale);
int clipped_src_y = y + (height - dest.height - (dest.y - dy * window_scale));
glBlitFramebufferEXT(clipped_src_x, clipped_src_y,
(clipped_src_x + dest.width), (clipped_src_y + dest.height),
dest.x, FLIP_Y(dest.y + dest.height),
dest.x + dest.width, FLIP_Y(dest.y),
GL_COLOR_BUFFER_BIT, GL_NEAREST);
if (impl_window->current_paint.flushed_region)
{
cairo_rectangle_int_t flushed_rect;
flushed_rect.x = dest.x / window_scale;
flushed_rect.y = dest.y / window_scale;
flushed_rect.width = (dest.x + dest.width + window_scale - 1) / window_scale - flushed_rect.x;
flushed_rect.height = (dest.y + dest.height + window_scale - 1) / window_scale - flushed_rect.y;
cairo_region_union_rectangle (impl_window->current_paint.flushed_region,
&flushed_rect);
cairo_region_subtract_rectangle (impl_window->current_paint.need_blend_region,
&flushed_rect);
}
}
}
glDisable (GL_SCISSOR_TEST);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
#undef FLIP_Y
}
/* For direct paint of alpha or non-alpha textures we can use texturing */
else if ((_gdk_gl_flags & GDK_GL_SOFTWARE_DRAW_GL) == 0 &&
source_type == GL_TEXTURE &&
direct_window != NULL &&
direct_window->current_paint.use_gl &&
trivial_transform &&
clip_region != NULL)
{
int unscaled_window_height;
GLint texture_width;
GLint texture_height;
int i, n_rects, n_quads;
GdkTexturedQuad *quads;
cairo_rectangle_int_t clip_rect;
/* Translate to impl coords */
cairo_region_translate (clip_region, dx, dy);
if (alpha_size != 0)
{
cairo_region_t *opaque_region, *blend_region;
opaque_region = cairo_region_copy (clip_region);
cairo_region_subtract (opaque_region, impl_window->current_paint.flushed_region);
cairo_region_subtract (opaque_region, impl_window->current_paint.need_blend_region);
if (!cairo_region_is_empty (opaque_region))
gdk_gl_texture_from_surface (impl_window->current_paint.surface,
opaque_region);
blend_region = cairo_region_copy (clip_region);
cairo_region_intersect (blend_region, impl_window->current_paint.need_blend_region);
glEnable (GL_BLEND);
if (!cairo_region_is_empty (blend_region))
gdk_gl_texture_from_surface (impl_window->current_paint.surface,
blend_region);
cairo_region_destroy (opaque_region);
cairo_region_destroy (blend_region);
}
glBindTexture (GL_TEXTURE_2D, source);
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &texture_width);
glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &texture_height);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glEnable (GL_SCISSOR_TEST);
gdk_window_get_unscaled_size (impl_window, NULL, &unscaled_window_height);
#define FLIP_Y(_y) (unscaled_window_height - (_y))
cairo_region_get_extents (clip_region, &clip_rect);
glScissor (clip_rect.x * window_scale, FLIP_Y ((clip_rect.y + clip_rect.height) * window_scale),
clip_rect.width * window_scale, clip_rect.height * window_scale);
n_quads = 0;
n_rects = cairo_region_num_rectangles (clip_region);
quads = g_new (GdkTexturedQuad, n_rects);
for (i = 0; i < n_rects; i++)
{
cairo_rectangle_int_t dest;
cairo_region_get_rectangle (clip_region, i, &clip_rect);
clip_rect.x *= window_scale;
clip_rect.y *= window_scale;
clip_rect.width *= window_scale;
clip_rect.height *= window_scale;
dest.x = dx * window_scale;
dest.y = dy * window_scale;
dest.width = width * window_scale / buffer_scale;
dest.height = height * window_scale / buffer_scale;
if (gdk_rectangle_intersect (&clip_rect, &dest, &dest))
{
int clipped_src_x = x + (dest.x - dx * window_scale);
int clipped_src_y = y + (height - dest.height - (dest.y - dy * window_scale));
GdkTexturedQuad quad = {
dest.x, FLIP_Y(dest.y),
dest.x + dest.width, FLIP_Y(dest.y + dest.height),
clipped_src_x / (float)texture_width, (clipped_src_y + dest.height) / (float)texture_height,
(clipped_src_x + dest.width) / (float)texture_width, clipped_src_y / (float)texture_height,
};
quads[n_quads++] = quad;
if (impl_window->current_paint.flushed_region)
{
cairo_rectangle_int_t flushed_rect;
flushed_rect.x = dest.x / window_scale;
flushed_rect.y = dest.y / window_scale;
flushed_rect.width = (dest.x + dest.width + window_scale - 1) / window_scale - flushed_rect.x;
flushed_rect.height = (dest.y + dest.height + window_scale - 1) / window_scale - flushed_rect.y;
cairo_region_union_rectangle (impl_window->current_paint.flushed_region,
&flushed_rect);
cairo_region_subtract_rectangle (impl_window->current_paint.need_blend_region,
&flushed_rect);
}
}
}
if (n_quads > 0)
gdk_gl_texture_quads (paint_context, GL_TEXTURE_2D, n_quads, quads);
g_free (quads);
if (alpha_size != 0)
glDisable (GL_BLEND);
#undef FLIP_Y
}
else
{
/* Software fallback */
/* TODO: avoid reading back non-required data due to dest clip */
image = cairo_surface_create_similar_image (cairo_get_target (cr),
(alpha_size == 0) ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32,
width, height);
cairo_surface_set_device_scale (image, buffer_scale, buffer_scale);
framebuffer = paint_data->tmp_framebuffer;
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, framebuffer);
if (source_type == GL_RENDERBUFFER)
{
/* Create a framebuffer with the source renderbuffer and
make it the current target for reads */
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, source);
}
else
{
glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, source, 0);
}
glPixelStorei (GL_PACK_ALIGNMENT, 4);
glPixelStorei (GL_PACK_ROW_LENGTH, cairo_image_surface_get_stride (image) / 4);
glReadPixels (x, y, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
cairo_image_surface_get_data (image));
glPixelStorei (GL_PACK_ROW_LENGTH, 0);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
cairo_surface_mark_dirty (image);
/* Invert due to opengl having different origin */
cairo_scale (cr, 1, -1);
cairo_translate (cr, 0, -height / buffer_scale);
cairo_set_source_surface (cr, image, 0, 0);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_paint (cr);
cairo_surface_destroy (image);
}
if (clip_region)
cairo_region_destroy (clip_region);
}
static char* get_stride_attrib(cdCtxCanvas* ctxcanvas)
{
static char data[100];
sprintf(data, "%d", cairo_image_surface_get_stride(cairo_get_target(ctxcanvas->cr)));
return data;
}
int guac_png_write(guac_socket* socket, guac_stream* stream,
cairo_surface_t* surface) {
png_structp png;
png_infop png_info;
png_byte** png_rows;
int bpp;
int x, y;
guac_png_write_state write_state;
/* Get image surface properties and data */
cairo_format_t format = cairo_image_surface_get_format(surface);
int width = cairo_image_surface_get_width(surface);
int height = cairo_image_surface_get_height(surface);
int stride = cairo_image_surface_get_stride(surface);
unsigned char* data = cairo_image_surface_get_data(surface);
/* If not RGB24, use Cairo PNG writer */
if (format != CAIRO_FORMAT_RGB24 || data == NULL)
return guac_png_cairo_write(socket, stream, surface);
/* Flush pending operations to surface */
cairo_surface_flush(surface);
/* Attempt to build palette */
guac_palette* palette = guac_palette_alloc(surface);
/* If not possible, resort to Cairo PNG writer */
if (palette == NULL)
return guac_png_cairo_write(socket, stream, surface);
/* Calculate BPP from palette size */
if (palette->size <= 2) bpp = 1;
else if (palette->size <= 4) bpp = 2;
else if (palette->size <= 16) bpp = 4;
else bpp = 8;
/* Set up PNG writer */
png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png) {
guac_error = GUAC_STATUS_INTERNAL_ERROR;
guac_error_message = "libpng failed to create write structure";
return -1;
}
png_info = png_create_info_struct(png);
if (!png_info) {
png_destroy_write_struct(&png, NULL);
guac_error = GUAC_STATUS_INTERNAL_ERROR;
guac_error_message = "libpng failed to create info structure";
return -1;
}
/* Set error handler */
if (setjmp(png_jmpbuf(png))) {
png_destroy_write_struct(&png, &png_info);
guac_error = GUAC_STATUS_IO_ERROR;
guac_error_message = "libpng output error";
return -1;
}
/* Init write state */
write_state.socket = socket;
write_state.stream = stream;
write_state.buffer_size = 0;
/* Set up writer */
png_set_write_fn(png, &write_state,
guac_png_write_handler,
guac_png_flush_handler);
/* Copy data from surface into PNG data */
png_rows = (png_byte**) malloc(sizeof(png_byte*) * height);
for (y=0; y<height; y++) {
/* Allocate new PNG row */
png_byte* row = (png_byte*) malloc(sizeof(png_byte) * width);
png_rows[y] = row;
/* Copy data from surface into current row */
for (x=0; x<width; x++) {
/* Get pixel color */
int color = ((uint32_t*) data)[x] & 0xFFFFFF;
/* Set index in row */
row[x] = guac_palette_find(palette, color);
}
/* Advance to next data row */
data += stride;
}
/* Write image info */
png_set_IHDR(
png,
png_info,
width,
height,
bpp,
PNG_COLOR_TYPE_PALETTE,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT
);
/* Write palette */
png_set_PLTE(png, png_info, palette->colors, palette->size);
/* Write image */
png_set_rows(png, png_info, png_rows);
png_write_png(png, png_info, PNG_TRANSFORM_PACKING, NULL);
/* Finish write */
png_destroy_write_struct(&png, &png_info);
/* Free palette */
guac_palette_free(palette);
/* Free PNG data */
for (y=0; y<height; y++)
free(png_rows[y]);
free(png_rows);
/* Ensure all data is written */
guac_png_flush_data(&write_state);
return 0;
}
int draw(tr_params * render)
{
fontface * face = NULL;
cairo_surface_t * sub_surface;
cairo_t * sub_context;
cairo_status_t status;
cairo_text_extents_t text_extents, help_extents;
int stride;
cairo_matrix_t matrix;
double elapsed;
#ifdef __linux
struct timespec tp_start, tp_end;
#else
clock_t start, end;
#endif
#ifdef __linux
clock_gettime(CLOCK_REALTIME, &tp_start);
#else
start = clock();
#endif
if ( render->text == NULL || strlen(render->text) == 0 )
{
fwrite(nullpng, 1, sizeof(nullpng), stdout);
return 0;
}
if ( render->font != NULL )
face = hash_get(faces, render->font);
if ( face == NULL )
face = hash_get(faces, "__DEFAULT__");
cairo_set_font_size(main_context, render->size);
cairo_set_font_face(main_context, face->cface);
// the help parameter will probably alter the text to draw, so let's check it first
if ( render->help != NULL && strncmp(render->help, "debug", sizeof("debug")) != 0 )
render->text = help_text(render);
// how big will the rendered text be?
cairo_text_extents(main_context, render->text, &text_extents);
// we'll might also need to know the extents of the help text
if ( render->help != NULL && strncmp(render->help, "debug", sizeof("debug")) == 0 )
cairo_text_extents(main_context, help_text(render), &help_extents);
// since Cairo origins it's draw from the lower-left (for l2r text) we have to adjust y
if ( render->y == _DEFAULT_Y )
render->y = text_extents.height;
// TODO - if helptext, grow render w and h as needed...
// 1.06 is a swizzle factor to compensate for the incorrect extents cairo produces
if ( render->w == _DEFAULT_WIDTH )
{ render->w = ceil(render->x) + ceil(text_extents.width * 1.06); }
if ( render->h == _DEFAULT_HEIGHT )
{ render->h = ceil(render->y) + ceil(text_extents.height); }
stride = cairo_image_surface_get_stride(main_surface);
// we know how big the image will be, create our sub_surface from the main_surface
sub_surface = cairo_image_surface_create_for_data(cairo_image_surface_get_data(main_surface),
CAIRO_FORMAT_ARGB32, render->w, render->h, stride);
sub_context = cairo_create(sub_surface);
// Remember, this is a new surface that just happens to share the same
// buffer as main_surface so we have to set the font size and face for it
cairo_set_font_size(sub_context, render->size);
cairo_set_font_face(sub_context, face->cface);
// clear the buffer of left-over data
cairo_set_operator(sub_context, CAIRO_OPERATOR_CLEAR);
cairo_paint(sub_context);
// And now we're ready to draw!
cairo_set_operator(sub_context, CAIRO_OPERATOR_OVER);
// do we need to show a background color?
if ( render->bgr != 0.0 || render->bgg != 0.0 || render->bgb != 0.0 || render->bga != 0.0 )
{
cairo_set_source_rgba(sub_context, render->bgr, render->bgg, render->bgb, render->bga);
cairo_paint_with_alpha(sub_context, render->bga);
}
// set text color
cairo_set_source_rgba(sub_context, render->r, render->g, render->b, render->a);
cairo_move_to(sub_context, render->x, render->y);
/*
// TODO: rotation currently rotates around the upper-left corner, fix to rotate around text center
if ( render->th != 0.0 )
{
cairo_get_font_matrix(sub_context, &matrix);
cairo_matrix_rotate(&matrix, render->th);
cairo_set_font_matrix(sub_context, &matrix);
}
*/
cairo_show_text(sub_context, render->text);
// if we're set to debug, we'll have attempted a render above, and now we draw a parameters placard
if ( render->help != NULL && (strncmp(render->help, "debug", sizeof("debug")) == 0) )
{
// half-transparent black fill
cairo_set_source_rgba(sub_context, 0, 0, 0, 1.0);
cairo_paint_with_alpha(sub_context, 0.5);
face = hash_get(faces, "__DEFAULT__");
cairo_set_font_face(sub_context, face->cface);
cairo_set_font_size(sub_context, 12);
cairo_move_to(sub_context, 0, 12);
cairo_set_source_rgba(sub_context, 1, 1, 1, 1.0);
cairo_show_text(sub_context, help_text(render));
}
status = cairo_surface_write_to_png_stream(sub_surface, FCGI_cairo_write_stream, NULL);
cairo_destroy(sub_context);
cairo_surface_destroy(sub_surface);
#ifdef __linux
clock_gettime(CLOCK_REALTIME, &tp_end);
elapsed = tp_end.tv_sec - tp_start.tv_sec;
elapsed += (tp_end.tv_nsec - tp_start.tv_nsec)/1000000000.0;
#else
end = clock();
elapsed = ((double) (end - start)) / CLOCKS_PER_SEC;
#endif
// fprintf(stderr, "elapsed: %.3fms", elapsed*1000); // logging
}
static gboolean
select_area_expose (GtkWidget *widget,
GdkEventExpose *event)
{
cairo_t *cr;
GtkAllocation allocation;
gdouble dx;
gdouble dy;
cairo_surface_t *surface;
guchar *dest;
gdouble y;
gint j;
cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
gtk_widget_get_allocation (widget, &allocation);
dx = 1.0 / allocation.width;
dy = 1.0 / allocation.height;
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
event->area.width,
event->area.height);
dest = cairo_image_surface_get_data (surface);
for (j = 0, y = event->area.y / allocation.height;
j < event->area.height;
j++, y += dy)
{
guchar *d = dest;
gdouble r = calc (0, y, 0);
gdouble g = calc (0, y, 120);
gdouble b = calc (0, y, 240);
gdouble dr = calc (dx, y, 0) - r;
gdouble dg = calc (dx, y, 120) - g;
gdouble db = calc (dx, y, 240) - b;
gint i;
r += event->area.x * dr;
g += event->area.x * dg;
b += event->area.x * db;
for (i = 0; i < event->area.width; i++)
{
GIMP_CAIRO_RGB24_SET_PIXEL (d,
CLAMP ((gint) r, 0, 255),
CLAMP ((gint) g, 0, 255),
CLAMP ((gint) b, 0, 255));
r += dr;
g += dg;
b += db;
d += 4;
}
dest += cairo_image_surface_get_stride (surface);
}
cairo_surface_mark_dirty (surface);
cairo_set_source_surface (cr, surface,
event->area.x, event->area.y);
cairo_surface_destroy (surface);
cairo_paint (cr);
cairo_destroy (cr);
return FALSE;
}
static PangoClutterGlyphCacheValue *
pango_clutter_renderer_get_cached_glyph (PangoRenderer *renderer,
PangoFont *font,
PangoGlyph glyph)
{
PangoClutterRenderer *priv = PANGO_CLUTTER_RENDERER (renderer);
PangoClutterGlyphCacheValue *value;
PangoClutterGlyphCache *glyph_cache;
glyph_cache = priv->use_mipmapping
? priv->mipmapped_glyph_cache : priv->glyph_cache;
if ((value = pango_clutter_glyph_cache_lookup (glyph_cache,
font,
glyph)) == NULL)
{
cairo_surface_t *surface;
cairo_t *cr;
cairo_scaled_font_t *scaled_font;
PangoRectangle ink_rect;
cairo_glyph_t cairo_glyph;
pango_font_get_glyph_extents (font, glyph, &ink_rect, NULL);
pango_extents_to_pixels (&ink_rect, NULL);
surface = cairo_image_surface_create (CAIRO_FORMAT_A8,
ink_rect.width,
ink_rect.height);
cr = cairo_create (surface);
scaled_font = pango_cairo_font_get_scaled_font (PANGO_CAIRO_FONT (font));
cairo_set_scaled_font (cr, scaled_font);
cairo_glyph.x = -ink_rect.x;
cairo_glyph.y = -ink_rect.y;
/* The PangoCairo glyph numbers directly map to Cairo glyph
numbers */
cairo_glyph.index = glyph;
cairo_show_glyphs (cr, &cairo_glyph, 1);
cairo_destroy (cr);
cairo_surface_flush (surface);
/* Copy the glyph to the cache */
value = pango_clutter_glyph_cache_set
(glyph_cache, font, glyph,
cairo_image_surface_get_data (surface),
cairo_image_surface_get_width (surface),
cairo_image_surface_get_height (surface),
cairo_image_surface_get_stride (surface),
ink_rect.x, ink_rect.y);
cairo_surface_destroy (surface);
CLUTTER_NOTE (PANGO, "cache fail %i", glyph);
}
else
CLUTTER_NOTE (PANGO, "cache success %i", glyph);
return value;
}
static void
gimp_view_render_temp_buf_to_surface (GimpViewRenderer *renderer,
GtkWidget *widget,
GimpTempBuf *temp_buf,
gint temp_buf_x,
gint temp_buf_y,
gint channel,
GimpViewBG inside_bg,
GimpViewBG outside_bg,
cairo_surface_t *surface,
gint surface_width,
gint surface_height)
{
cairo_t *cr;
gint x, y;
gint width, height;
const Babl *temp_buf_format;
gint temp_buf_width;
gint temp_buf_height;
g_return_if_fail (temp_buf != NULL);
g_return_if_fail (surface != NULL);
temp_buf_format = gimp_temp_buf_get_format (temp_buf);
temp_buf_width = gimp_temp_buf_get_width (temp_buf);
temp_buf_height = gimp_temp_buf_get_height (temp_buf);
/* Here are the different cases this functions handles correctly:
* 1) Offset temp_buf which does not necessarily cover full image area
* 2) Color conversion of temp_buf if it is gray and image is color
* 3) Background check buffer for transparent temp_bufs
* 4) Using the optional "channel" argument, one channel can be extracted
* from a multi-channel temp_buf and composited as a grayscale
* Prereqs:
* 1) Grayscale temp_bufs have bytes == {1, 2}
* 2) Color temp_bufs have bytes == {3, 4}
* 3) If image is gray, then temp_buf should have bytes == {1, 2}
*/
cr = cairo_create (surface);
if (outside_bg == GIMP_VIEW_BG_CHECKS ||
inside_bg == GIMP_VIEW_BG_CHECKS)
{
if (! renderer->pattern)
renderer->pattern =
gimp_cairo_checkerboard_create (cr, GIMP_CHECK_SIZE_SM,
gimp_render_light_check_color (),
gimp_render_dark_check_color ());
}
switch (outside_bg)
{
case GIMP_VIEW_BG_CHECKS:
cairo_set_source (cr, renderer->pattern);
break;
case GIMP_VIEW_BG_WHITE:
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
break;
}
cairo_paint (cr);
if (! gimp_rectangle_intersect (0, 0,
surface_width, surface_height,
temp_buf_x, temp_buf_y,
temp_buf_width, temp_buf_height,
&x, &y,
&width, &height))
{
cairo_destroy (cr);
return;
}
if (inside_bg != outside_bg &&
babl_format_has_alpha (temp_buf_format) && channel == -1)
{
cairo_rectangle (cr, x, y, width, height);
switch (inside_bg)
{
case GIMP_VIEW_BG_CHECKS:
cairo_set_source (cr, renderer->pattern);
break;
case GIMP_VIEW_BG_WHITE:
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
break;
}
cairo_fill (cr);
}
if (babl_format_has_alpha (temp_buf_format) && channel == -1)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
cairo_surface_t *alpha_surface;
alpha_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
width, height);
src_buffer = gimp_temp_buf_create_buffer (temp_buf);
dest_buffer = gimp_cairo_surface_create_buffer (alpha_surface);
if (! renderer->profile_transform)
gimp_view_renderer_transform_create (renderer, widget,
src_buffer, dest_buffer);
if (renderer->profile_transform)
{
gimp_gegl_convert_color_transform (src_buffer,
GEGL_RECTANGLE (x - temp_buf_x,
y - temp_buf_y,
width, height),
renderer->profile_src_format,
dest_buffer,
GEGL_RECTANGLE (0, 0, 0, 0),
renderer->profile_dest_format,
renderer->profile_transform);
}
else
{
gegl_buffer_copy (src_buffer,
GEGL_RECTANGLE (x - temp_buf_x,
y - temp_buf_y,
width, height),
GEGL_ABYSS_NONE,
dest_buffer,
GEGL_RECTANGLE (0, 0, 0, 0));
}
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
cairo_surface_mark_dirty (alpha_surface);
cairo_translate (cr, x, y);
cairo_rectangle (cr, 0, 0, width, height);
cairo_set_source_surface (cr, alpha_surface, 0, 0);
cairo_fill (cr);
cairo_surface_destroy (alpha_surface);
}
else if (channel == -1)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
cairo_surface_flush (surface);
src_buffer = gimp_temp_buf_create_buffer (temp_buf);
dest_buffer = gimp_cairo_surface_create_buffer (surface);
if (! renderer->profile_transform)
gimp_view_renderer_transform_create (renderer, widget,
src_buffer, dest_buffer);
if (renderer->profile_transform)
{
gimp_gegl_convert_color_transform (src_buffer,
GEGL_RECTANGLE (x - temp_buf_x,
y - temp_buf_y,
width, height),
renderer->profile_src_format,
dest_buffer,
GEGL_RECTANGLE (x, y, 0, 0),
renderer->profile_dest_format,
renderer->profile_transform);
}
else
{
gegl_buffer_copy (src_buffer,
GEGL_RECTANGLE (x - temp_buf_x,
y - temp_buf_y,
width, height),
GEGL_ABYSS_NONE,
dest_buffer,
GEGL_RECTANGLE (x, y, 0, 0));
}
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
cairo_surface_mark_dirty (surface);
}
else
{
const Babl *fish;
const guchar *src;
guchar *dest;
gint dest_stride;
gint bytes;
gint rowstride;
gint i;
cairo_surface_flush (surface);
bytes = babl_format_get_bytes_per_pixel (temp_buf_format);
rowstride = temp_buf_width * bytes;
src = gimp_temp_buf_get_data (temp_buf) + ((y - temp_buf_y) * rowstride +
(x - temp_buf_x) * bytes);
dest = cairo_image_surface_get_data (surface);
dest_stride = cairo_image_surface_get_stride (surface);
dest += y * dest_stride + x * 4;
fish = babl_fish (temp_buf_format,
babl_format ("cairo-RGB24"));
for (i = y; i < (y + height); i++)
{
const guchar *s = src;
guchar *d = dest;
gint j;
for (j = x; j < (x + width); j++, d += 4, s += bytes)
{
if (bytes > 2)
{
guchar pixel[4] = { s[channel], s[channel], s[channel], 255 };
babl_process (fish, pixel, d, 1);
}
else
{
guchar pixel[2] = { s[channel], 255 };
babl_process (fish, pixel, d, 1);
}
}
src += rowstride;
dest += dest_stride;
}
cairo_surface_mark_dirty (surface);
}
cairo_destroy (cr);
}
static const char *
write_ppm (cairo_surface_t *surface, int fd)
{
char buf[4096];
cairo_format_t format;
const char *format_str;
const unsigned char *data;
int len;
int width, height, stride;
int i, j;
data = cairo_image_surface_get_data (surface);
height = cairo_image_surface_get_height (surface);
width = cairo_image_surface_get_width (surface);
stride = cairo_image_surface_get_stride (surface);
format = cairo_image_surface_get_format (surface);
if (format == CAIRO_FORMAT_ARGB32) {
/* see if we can convert to a standard ppm type and trim a few bytes */
const unsigned char *alpha = data;
for (j = height; j--; alpha += stride) {
for (i = 0; i < width; i++) {
if ((*(unsigned int *) (alpha+4*i) & 0xff000000) != 0xff000000)
goto done;
}
}
format = CAIRO_FORMAT_RGB24;
done: ;
}
switch (format) {
case CAIRO_FORMAT_ARGB32:
/* XXX need true alpha for svg */
format_str = "P7";
break;
case CAIRO_FORMAT_RGB24:
format_str = "P6";
break;
case CAIRO_FORMAT_A8:
format_str = "P5";
break;
case CAIRO_FORMAT_A1:
default:
return "unhandled image format";
}
len = sprintf (buf, "%s %d %d 255\n", format_str, width, height);
for (j = 0; j < height; j++) {
const unsigned int *row = (unsigned int *) (data + stride * j);
switch ((int) format) {
case CAIRO_FORMAT_ARGB32:
len = _write (fd,
buf, sizeof (buf), len,
(unsigned char *) row, 4 * width);
break;
case CAIRO_FORMAT_RGB24:
for (i = 0; i < width; i++) {
unsigned char rgb[3];
unsigned int p = *row++;
rgb[0] = (p & 0xff0000) >> 16;
rgb[1] = (p & 0x00ff00) >> 8;
rgb[2] = (p & 0x0000ff) >> 0;
len = _write (fd,
buf, sizeof (buf), len,
rgb, 3);
}
break;
case CAIRO_FORMAT_A8:
len = _write (fd,
buf, sizeof (buf), len,
(unsigned char *) row, width);
break;
}
if (len < 0)
return "write failed";
}
if (len && ! _writen (fd, buf, len))
return "write failed";
return NULL;
}
static gboolean
spectrogram_draw (GtkWidget *widget, cairo_t *cr, gpointer user_data) {
w_spectrogram_t *w = user_data;
GtkAllocation a;
gtk_widget_get_allocation (widget, &a);
if (!w->samples || a.height < 1) {
return FALSE;
}
int width, height;
width = a.width;
height = a.height;
int ratio = ftoi (FFT_SIZE/(a.height*2));
ratio = CLAMP (ratio,0,1023);
if (deadbeef->get_output ()->state () == OUTPUT_STATE_PLAYING) {
do_fft (w);
float log_scale = (log2f(w->samplerate/2)-log2f(25.))/(a.height);
float freq_res = w->samplerate / FFT_SIZE;
if (a.height != w->height) {
w->height = MIN (a.height, MAX_HEIGHT);
for (int i = 0; i < w->height; i++) {
w->log_index[i] = ftoi (powf(2.,((float)i) * log_scale + log2f(25.)) / freq_res);
if (i > 0 && w->log_index[i-1] == w->log_index [i]) {
w->low_res_end = i;
}
}
}
}
// start drawing
if (!w->surf || cairo_image_surface_get_width (w->surf) != a.width || cairo_image_surface_get_height (w->surf) != a.height) {
if (w->surf) {
cairo_surface_destroy (w->surf);
w->surf = NULL;
}
w->surf = cairo_image_surface_create (CAIRO_FORMAT_RGB24, a.width, a.height);
}
cairo_surface_flush (w->surf);
unsigned char *data = cairo_image_surface_get_data (w->surf);
if (!data) {
return FALSE;
}
int stride = cairo_image_surface_get_stride (w->surf);
if (deadbeef->get_output ()->state () == OUTPUT_STATE_PLAYING) {
for (int i = 0; i < a.height; i++) {
// scrolling: move line i 1px to the left
memmove (data + (i*stride), data + sizeof (uint32_t) + (i*stride), stride - sizeof (uint32_t));
}
for (int i = 0; i < a.height; i++)
{
float f = 1.0;
int index0, index1;
int bin0, bin1, bin2;
if (CONFIG_LOG_SCALE) {
bin0 = w->log_index[CLAMP (i-1,0,height-1)];
bin1 = w->log_index[i];
bin2 = w->log_index[CLAMP (i+1,0,height-1)];
}
else {
bin0 = (i-1) * ratio;
bin1 = i * ratio;
bin2 = (i+1) * ratio;
}
index0 = bin0 + ftoi ((bin1 - bin0)/2.f);
if (index0 == bin0) index0 = bin1;
index1 = bin1 + ftoi ((bin2 - bin1)/2.f);
if (index1 == bin2) index1 = bin1;
index0 = CLAMP (index0,0,FFT_SIZE/2-1);
index1 = CLAMP (index1,0,FFT_SIZE/2-1);
f = spectrogram_get_value (w, index0, index1);
float x = 10 * log10f (f);
// interpolate
if (i <= w->low_res_end && CONFIG_LOG_SCALE) {
int j = 0;
// find index of next value
while (i+j < height && w->log_index[i+j] == w->log_index[i]) {
j++;
}
float v0 = x;
float v1 = w->data[w->log_index[i+j]];
if (v1 != 0) {
v1 = 10 * log10f (v1);
}
int k = 0;
while ((k+i) >= 0 && w->log_index[k+i] == w->log_index[i]) {
j++;
k--;
}
x = linear_interpolate (v0,v1,(1.0/(j-1)) * ((-1 * k) - 1));
}
// TODO: get rid of hardcoding
x += CONFIG_DB_RANGE - 63;
x = CLAMP (x, 0, CONFIG_DB_RANGE);
int color_index = GRADIENT_TABLE_SIZE - ftoi (GRADIENT_TABLE_SIZE/(float)CONFIG_DB_RANGE * x);
color_index = CLAMP (color_index, 0, GRADIENT_TABLE_SIZE-1);
_draw_point (data, stride, width-1, height-1-i, w->colors[color_index]);
}
}
cairo_surface_mark_dirty (w->surf);
cairo_save (cr);
cairo_set_source_surface (cr, w->surf, 0, 0);
cairo_rectangle (cr, 0, 0, a.width, a.height);
cairo_fill (cr);
cairo_restore (cr);
return FALSE;
}
int32_t
DataSourceSurfaceCairo::Stride()
{
return cairo_image_surface_get_stride(mImageSurface);
}
GthImage *
_cairo_image_surface_create_from_tiff (GInputStream *istream,
GthFileData *file_data,
int requested_size,
int *original_width_p,
int *original_height_p,
gboolean *loaded_original_p,
gpointer user_data,
GCancellable *cancellable,
GError **error)
{
GthImage *image;
Handle handle;
TIFF *tif;
gboolean first_directory;
int best_directory;
int max_width, max_height, min_diff;
uint32 image_width;
uint32 image_height;
uint32 spp;
uint16 extrasamples;
uint16 *sampleinfo;
uint16 orientation;
char emsg[1024];
cairo_surface_t *surface;
cairo_surface_metadata_t*metadata;
uint32 *raster;
image = gth_image_new ();
handle.cancellable = cancellable;
handle.size = 0;
if ((file_data != NULL) && (file_data->info != NULL)) {
handle.istream = g_buffered_input_stream_new (istream);
handle.size = g_file_info_get_size (file_data->info);
}
else {
void *data;
gsize size;
/* read the whole stream to get the file size */
if (! _g_input_stream_read_all (istream, &data, &size, cancellable, error))
return image;
handle.istream = g_memory_input_stream_new_from_data (data, size, g_free);
handle.size = size;
}
TIFFSetErrorHandler (tiff_error_handler);
TIFFSetWarningHandler (tiff_error_handler);
tif = TIFFClientOpen ("gth-tiff-reader", "r",
&handle,
tiff_read,
tiff_write,
tiff_seek,
tiff_close,
tiff_size,
NULL,
NULL);
if (tif == NULL) {
g_object_unref (handle.istream);
g_set_error_literal (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
"Couldn't allocate memory for writing TIFF file");
return image;
}
/* find the best image to load */
first_directory = TRUE;
best_directory = -1;
max_width = -1;
max_height = -1;
min_diff = 0;
do {
int width;
int height;
if (TIFFGetField (tif, TIFFTAG_IMAGEWIDTH, &width) != 1)
continue;
if (TIFFGetField (tif, TIFFTAG_IMAGELENGTH, &height) != 1)
continue;
if (! TIFFRGBAImageOK (tif, emsg))
continue;
if (width > max_width) {
max_width = width;
max_height = height;
if (requested_size <= 0)
best_directory = TIFFCurrentDirectory (tif);
}
if (requested_size > 0) {
int diff = abs (requested_size - width);
if (first_directory) {
min_diff = diff;
best_directory = TIFFCurrentDirectory (tif);
}
else if (diff < min_diff) {
min_diff = diff;
best_directory = TIFFCurrentDirectory (tif);
}
}
first_directory = FALSE;
}
while (TIFFReadDirectory (tif));
if (best_directory == -1) {
TIFFClose (tif);
g_object_unref (handle.istream);
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
"Invalid TIFF format");
return image;
}
/* read the image */
TIFFSetDirectory (tif, best_directory);
TIFFGetField (tif, TIFFTAG_IMAGEWIDTH, &image_width);
TIFFGetField (tif, TIFFTAG_IMAGELENGTH, &image_height);
TIFFGetField (tif, TIFFTAG_SAMPLESPERPIXEL, &spp);
TIFFGetFieldDefaulted (tif, TIFFTAG_EXTRASAMPLES, &extrasamples, &sampleinfo);
if (TIFFGetFieldDefaulted (tif, TIFFTAG_ORIENTATION, &orientation) != 1)
orientation = ORIENTATION_TOPLEFT;
if (original_width_p)
*original_width_p = max_width;
if (original_height_p)
*original_height_p = max_height;
if (loaded_original_p)
*loaded_original_p = (max_width == image_width);
surface = _cairo_image_surface_create (CAIRO_FORMAT_ARGB32, image_width, image_height);
if (surface == NULL) {
TIFFClose (tif);
g_object_unref (handle.istream);
g_set_error_literal (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
"Couldn't allocate memory for writing TIFF file");
return image;
}
metadata = _cairo_image_surface_get_metadata (surface);
_cairo_metadata_set_has_alpha (metadata, (extrasamples == 1) || (spp == 4));
_cairo_metadata_set_original_size (metadata, max_width, max_height);
raster = (uint32*) _TIFFmalloc (image_width * image_height * sizeof (uint32));
if (raster == NULL) {
cairo_surface_destroy (surface);
TIFFClose (tif);
g_object_unref (handle.istream);
g_set_error_literal (error,
GDK_PIXBUF_ERROR,
GDK_PIXBUF_ERROR_INSUFFICIENT_MEMORY,
"Couldn't allocate memory for writing TIFF file");
return image;
}
if (TIFFReadRGBAImageOriented (tif, image_width, image_height, raster, orientation, 0)) {
guchar *surface_row;
int line_step;
int x, y, temp;
guchar r, g, b, a;
uint32 *src_pixel;
surface_row = _cairo_image_surface_flush_and_get_data (surface);
line_step = cairo_image_surface_get_stride (surface);
src_pixel = raster;
for (y = 0; y < image_height; y++) {
guchar *dest_pixel = surface_row;
if (g_cancellable_is_cancelled (cancellable))
goto stop_loading;
for (x = 0; x < image_width; x++) {
r = TIFFGetR (*src_pixel);
g = TIFFGetG (*src_pixel);
b = TIFFGetB (*src_pixel);
a = TIFFGetA (*src_pixel);
CAIRO_SET_RGBA (dest_pixel, r, g, b, a);
dest_pixel += 4;
src_pixel += 1;
}
surface_row += line_step;
}
}
stop_loading:
cairo_surface_mark_dirty (surface);
if (! g_cancellable_is_cancelled (cancellable))
gth_image_set_cairo_surface (image, surface);
_TIFFfree (raster);
cairo_surface_destroy (surface);
TIFFClose (tif);
g_object_unref (handle.istream);
return image;
}
/* Performs a simple 2D Gaussian blur of radius @radius on surface @surface. */
static void blur_image_surface (cairo_surface_t *surface, int radius)
{
cairo_surface_t *tmp;
int width, height;
int src_stride, dst_stride;
int x, y, z, w;
uint8_t *src, *dst;
uint32_t *s, *d, a, p;
int i, j, k;
uint8_t kernel[17];
const int size = ARRAY_LENGTH (kernel);
const int half = size / 2;
if (cairo_surface_status (surface))
return;
cairo_surface_flush(surface);
width = cairo_image_surface_get_width (surface);
height = cairo_image_surface_get_height (surface);
switch (cairo_image_surface_get_format (surface)) {
case CAIRO_FORMAT_A1:
default:
/* Don't even think about it! */
return;
case CAIRO_FORMAT_A8:
/* Handle a8 surfaces by effectively unrolling the loops by a
* factor of 4 - this is safe since we know that stride has to be a
* multiple of uint32_t. */
width /= 4;
break;
case CAIRO_FORMAT_RGB24:
case CAIRO_FORMAT_ARGB32:
break;
}
tmp = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
if (cairo_surface_status (tmp))
return;
src = cairo_image_surface_get_data (surface);
src_stride = cairo_image_surface_get_stride (surface);
dst = cairo_image_surface_get_data (tmp);
dst_stride = cairo_image_surface_get_stride (tmp);
a = 0;
for (i = 0; i < size; i++) {
double f = i - half;
a += kernel[i] = exp (- f * f / 30.0) * 80;
}
/* Horizontally blur from surface -> tmp */
for (i = 0; i < height; i++) {
s = (uint32_t *) (src + i * src_stride);
d = (uint32_t *) (dst + i * dst_stride);
for (j = 0; j < width; j++) {
if (radius < j && j < width - radius) {
d[j] = s[j];
continue;
}
x = y = z = w = 0;
for (k = 0; k < size; k++) {
if (j - half + k < 0 || j - half + k >= width)
continue;
p = s[j - half + k];
x += ((p >> 24) & 0xff) * kernel[k];
y += ((p >> 16) & 0xff) * kernel[k];
z += ((p >> 8) & 0xff) * kernel[k];
w += ((p >> 0) & 0xff) * kernel[k];
}
d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
}
}
/* Then vertically blur from tmp -> surface */
for (i = 0; i < height; i++) {
s = (uint32_t *) (dst + i * dst_stride);
d = (uint32_t *) (src + i * src_stride);
for (j = 0; j < width; j++) {
if (radius <= i && i < height - radius) {
d[j] = s[j];
continue;
}
x = y = z = w = 0;
for (k = 0; k < size; k++) {
if (i - half + k < 0 || i - half + k >= height)
continue;
s = (uint32_t *) (dst + (i - half + k) * dst_stride);
p = s[j];
x += ((p >> 24) & 0xff) * kernel[k];
y += ((p >> 16) & 0xff) * kernel[k];
z += ((p >> 8) & 0xff) * kernel[k];
w += ((p >> 0) & 0xff) * kernel[k];
}
d[j] = (x / a << 24) | (y / a << 16) | (z / a << 8) | w / a;
}
}
cairo_surface_destroy (tmp);
cairo_surface_mark_dirty (surface);
}
int Image::getSurfaceStride() const {
return cairo_image_surface_get_stride(_surface);
}
bool GraphicsContext3D::ImageExtractor::extractImage(bool premultiplyAlpha, bool ignoreGammaAndColorProfile)
{
// This implementation is taken from GraphicsContext3DCairo.
if (!m_image)
return false;
// We need this to stay in scope because the native image is just a shallow copy of the data.
m_decoder = new ImageSource(premultiplyAlpha ? ImageSource::AlphaPremultiplied : ImageSource::AlphaNotPremultiplied, ignoreGammaAndColorProfile ? ImageSource::GammaAndColorProfileIgnored : ImageSource::GammaAndColorProfileApplied);
if (!m_decoder)
return false;
ImageSource& decoder = *m_decoder;
m_alphaOp = AlphaDoNothing;
if (m_image->data()) {
decoder.setData(m_image->data(), true);
if (!decoder.frameCount())
return false;
m_imageSurface = decoder.createFrameAtIndex(0);
if (!m_imageSurface || !decoder.frameIsCompleteAtIndex(0))
return false;
} else {
m_imageSurface = m_image->nativeImageForCurrentFrame();
// 1. For texImage2D with HTMLVideoElment input, assume no PremultiplyAlpha had been applied and the alpha value is 0xFF for each pixel,
// which is true at present and may be changed in the future and needs adjustment accordingly.
// 2. For texImage2D with HTMLCanvasElement input in which Alpha is already Premultiplied in this port,
// do AlphaDoUnmultiply if UNPACK_PREMULTIPLY_ALPHA_WEBGL is set to false.
if (!premultiplyAlpha && m_imageHtmlDomSource != HtmlDomVideo)
m_alphaOp = AlphaDoUnmultiply;
}
if (!m_imageSurface)
return false;
m_imageWidth = cairo_image_surface_get_width(m_imageSurface.get());
m_imageHeight = cairo_image_surface_get_height(m_imageSurface.get());
if (!m_imageWidth || !m_imageHeight)
return false;
if (cairo_image_surface_get_format(m_imageSurface.get()) != CAIRO_FORMAT_ARGB32)
return false;
uint srcUnpackAlignment = 1;
size_t bytesPerRow = cairo_image_surface_get_stride(m_imageSurface.get());
size_t bitsPerPixel = 32;
unsigned padding = bytesPerRow - bitsPerPixel / 8 * m_imageWidth;
if (padding) {
srcUnpackAlignment = padding + 1;
while (bytesPerRow % srcUnpackAlignment)
++srcUnpackAlignment;
}
m_imagePixelData = cairo_image_surface_get_data(m_imageSurface.get());
m_imageSourceFormat = DataFormatBGRA8;
m_imageSourceUnpackAlignment = srcUnpackAlignment;
return true;
}
bool GraphicsContext3D::ImageExtractor::extractImage(bool premultiplyAlpha, bool ignoreGammaAndColorProfile)
{
if (!m_image)
return false;
// We need this to stay in scope because the native image is just a shallow copy of the data.
m_decoder = new ImageSource(premultiplyAlpha ? ImageSource::AlphaPremultiplied : ImageSource::AlphaNotPremultiplied, ignoreGammaAndColorProfile ? ImageSource::GammaAndColorProfileIgnored : ImageSource::GammaAndColorProfileApplied);
if (!m_decoder)
return false;
ImageSource& decoder = *m_decoder;
m_alphaOp = AlphaDoNothing;
if (m_image->data()) {
decoder.setData(m_image->data(), true);
if (!decoder.frameCount() || !decoder.frameIsCompleteAtIndex(0))
return false;
m_imageSurface = decoder.createFrameAtIndex(0);
} else {
m_imageSurface = m_image->nativeImageForCurrentFrame();
// 1. For texImage2D with HTMLVideoElment input, assume no PremultiplyAlpha had been applied and the alpha value is 0xFF for each pixel,
// which is true at present and may be changed in the future and needs adjustment accordingly.
// 2. For texImage2D with HTMLCanvasElement input in which Alpha is already Premultiplied in this port,
// do AlphaDoUnmultiply if UNPACK_PREMULTIPLY_ALPHA_WEBGL is set to false.
if (!premultiplyAlpha && m_imageHtmlDomSource != HtmlDomVideo)
m_alphaOp = AlphaDoUnmultiply;
// if m_imageSurface is not an image, extract a copy of the surface
if (m_imageSurface && cairo_surface_get_type(m_imageSurface.get()) != CAIRO_SURFACE_TYPE_IMAGE) {
RefPtr<cairo_surface_t> tmpSurface = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32, m_imageWidth, m_imageHeight));
copyRectFromOneSurfaceToAnother(m_imageSurface.get(), tmpSurface.get(), IntSize(), IntRect(0, 0, m_imageWidth, m_imageHeight), IntSize(), CAIRO_OPERATOR_SOURCE);
m_imageSurface = tmpSurface.release();
}
}
if (!m_imageSurface)
return false;
ASSERT(cairo_surface_get_type(m_imageSurface.get()) == CAIRO_SURFACE_TYPE_IMAGE);
IntSize imageSize = cairoSurfaceSize(m_imageSurface.get());
m_imageWidth = imageSize.width();
m_imageHeight = imageSize.height();
if (!m_imageWidth || !m_imageHeight)
return false;
if (cairo_image_surface_get_format(m_imageSurface.get()) != CAIRO_FORMAT_ARGB32)
return false;
unsigned int srcUnpackAlignment = 1;
size_t bytesPerRow = cairo_image_surface_get_stride(m_imageSurface.get());
size_t bitsPerPixel = 32;
unsigned padding = bytesPerRow - bitsPerPixel / 8 * m_imageWidth;
if (padding) {
srcUnpackAlignment = padding + 1;
while (bytesPerRow % srcUnpackAlignment)
++srcUnpackAlignment;
}
m_imagePixelData = cairo_image_surface_get_data(m_imageSurface.get());
m_imageSourceFormat = DataFormatBGRA8;
m_imageSourceUnpackAlignment = srcUnpackAlignment;
return true;
}
void
setup_tile (gint w, gint h)
{
cairo_status_t status;
cairo_t* cr = NULL;
cairo_surface_t* cr_surf = NULL;
gdouble width = (gdouble) w;
gdouble height = (gdouble) h;
cairo_surface_t* tmp = NULL;
cairo_surface_t* dummy_surf = NULL;
cairo_surface_t* norm_surf = NULL;
cairo_surface_t* blur_surf = NULL;
raico_blur_t* blur = NULL;
tile_t* tile = NULL;
// create tmp. surface for scratch
cr_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE);
status = cairo_surface_status (cr_surf);
if (status != CAIRO_STATUS_SUCCESS)
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
// create context for that tmp. scratch surface
cr = cairo_create (cr_surf);
status = cairo_status (cr);
if (status != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (cr_surf);
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
}
// clear, render drop-shadow and bubble-background in scratch-surface
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
if (g_composited)
{
draw_shadow (cr,
width,
height,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
draw_round_rect (cr,
1.0f,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f* BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B,
0.95f);
}
else
cairo_set_source_rgb (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B);
draw_round_rect (cr,
1.0f,
BUBBLE_SHADOW_SIZE,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f * BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
// create tmp. copy of scratch-surface
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (cr_surf),
cairo_image_surface_get_format (cr_surf),
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (cr_surf));
dummy_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
// create normal-state surface for tile from copy of scratch-surface
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
norm_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
// blur tmp. copy of scratch-surface
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, 6);
raico_blur_apply (blur, dummy_surf);
raico_blur_destroy (blur);
// create blurred-state surface for tile
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
blur_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
// actually create the tile with padding in mind
tile = tile_new_for_padding (norm_surf, blur_surf);
destroy_cloned_surface (norm_surf);
destroy_cloned_surface (blur_surf);
destroy_cloned_surface (dummy_surf);
cairo_destroy (cr);
cairo_surface_destroy (cr_surf);
norm_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (norm_surf);
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
tile_paint_with_padding (tile, cr, 0.0f, 0.0f, w, h, 1.0f, 0.0f);
cairo_destroy (cr);
blur_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (blur_surf);
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
tile_paint_with_padding (tile, cr, 0.0f, 0.0f, w, h, 0.0f, 1.0f);
cairo_destroy (cr);
g_tile = tile_new_for_padding (norm_surf, blur_surf);
// clean up
tile_destroy (tile);
cairo_surface_destroy (norm_surf);
cairo_surface_destroy (blur_surf);
}
cairo_surface_t*
pdf_page_image_get_cairo(zathura_page_t* page, void* data,
zathura_image_t* image, zathura_error_t* error)
{
mupdf_page_t* mupdf_page = data;
if (page == NULL || mupdf_page == NULL || image == NULL || image->data == NULL) {
if (error != NULL) {
*error = ZATHURA_ERROR_INVALID_ARGUMENTS;
}
goto error_ret;
}
fz_image* mupdf_image = (fz_image*) image->data;
fz_pixmap* pixmap = NULL;
cairo_surface_t* surface = NULL;
pixmap = fz_get_pixmap_from_image(mupdf_page->ctx, mupdf_image, NULL, NULL, 0, 0);
if (pixmap == NULL) {
goto error_free;
}
surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, mupdf_image->w, mupdf_image->h);
if (surface == NULL) {
goto error_free;
}
unsigned char* surface_data = cairo_image_surface_get_data(surface);
int rowstride = cairo_image_surface_get_stride(surface);
unsigned char* s = fz_pixmap_samples(mupdf_page->ctx, pixmap);
unsigned int n = fz_pixmap_components(mupdf_page->ctx, pixmap);
const int height = fz_pixmap_height(mupdf_page->ctx, pixmap);
const int width = fz_pixmap_width(mupdf_page->ctx, pixmap);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
guchar* p = surface_data + y * rowstride + x * 4;
// RGB
if (n == 4) {
p[0] = s[2];
p[1] = s[1];
p[2] = s[0];
// Gray-scale or mask
} else {
p[0] = s[0];
p[1] = s[0];
p[2] = s[0];
}
s += n;
}
}
fz_drop_pixmap(mupdf_page->ctx, pixmap);
return surface;
error_free:
if (pixmap != NULL) {
fz_drop_pixmap(mupdf_page->ctx, pixmap);
}
if (surface != NULL) {
cairo_surface_destroy(surface);
}
error_ret:
return NULL;
}
static cairo_surface_t*
rotate (cairo_surface_t *image,
double angle,
gboolean high_quality,
guchar r0,
guchar g0,
guchar b0,
guchar a0,
GthAsyncTask *task)
{
cairo_surface_t *image_with_background;
cairo_surface_t *rotated;
double angle_rad;
double cos_angle, sin_angle;
double src_width, src_height;
int new_width, new_height;
int src_rowstride, new_rowstride;
int xi, yi;
double x, y;
double x2, y2;
int x2min, y2min;
int x2max, y2max;
double fx, fy;
guchar *p_src, *p_new;
guchar *p_src2, *p_new2;
guchar r00, r01, r10, r11;
guchar g00, g01, g10, g11;
guchar b00, b01, b10, b11;
guchar a00, a01, a10, a11;
double half_new_width;
double half_new_height;
double half_src_width;
double half_src_height;
int tmp;
guchar r, g, b, a;
guint32 pixel;
angle = CLAMP (angle, -90.0, 90.0);
angle_rad = angle / 180.0 * G_PI;
cos_angle = cos (angle_rad);
sin_angle = sin (angle_rad);
src_width = cairo_image_surface_get_width (image);
src_height = cairo_image_surface_get_height (image);
new_width = GDOUBLE_ROUND_TO_INT ( cos_angle * src_width + fabs(sin_angle) * src_height);
new_height = GDOUBLE_ROUND_TO_INT (fabs (sin_angle) * src_width + cos_angle * src_height);
if (a0 == 0xff) {
/* pre-multiply the background color */
image_with_background = _cairo_image_surface_copy (image);
p_src = _cairo_image_surface_flush_and_get_data (image);
p_new = _cairo_image_surface_flush_and_get_data (image_with_background);
src_rowstride = cairo_image_surface_get_stride (image);
new_rowstride = cairo_image_surface_get_stride (image_with_background);
cairo_surface_flush (image_with_background);
for (yi = 0; yi < src_height; yi++) {
p_src2 = p_src;
p_new2 = p_new;
for (xi = 0; xi < src_width; xi++) {
a = p_src2[CAIRO_ALPHA];
r = p_src2[CAIRO_RED] + _cairo_multiply_alpha (r0, 0xff - a);
g = p_src2[CAIRO_GREEN] + _cairo_multiply_alpha (g0, 0xff - a);
b = p_src2[CAIRO_BLUE] + _cairo_multiply_alpha (b0, 0xff - a);
pixel = CAIRO_RGBA_TO_UINT32 (r, g, b, 0xff);
memcpy (p_new2, &pixel, sizeof (guint32));
p_new2 += 4;
p_src2 += 4;
}
p_src += src_rowstride;
p_new += new_rowstride;
}
cairo_surface_mark_dirty (image_with_background);
}
else
image_with_background = cairo_surface_reference (image);
/* create the rotated image */
rotated = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, new_width, new_height);
p_src = _cairo_image_surface_flush_and_get_data (image_with_background);
p_new = _cairo_image_surface_flush_and_get_data (rotated);
src_rowstride = cairo_image_surface_get_stride (image_with_background);
new_rowstride = cairo_image_surface_get_stride (rotated);
/*
* bilinear interpolation
* fx
* v00------------v01
* | | |
* fy |--------v |
* | |
* | |
* | |
* v10------------v11
*/
#define INTERPOLATE(v, v00, v01, v10, v11, fx, fy) \
tmp = (1.0 - (fy)) * \
((1.0 - (fx)) * (v00) + (fx) * (v01)) \
+ \
(fy) * \
((1.0 - (fx)) * (v10) + (fx) * (v11)); \
v = CLAMP (tmp, 0, 255);
#define GET_VALUES(r, g, b, a, x, y) \
if (x >= 0 && x < src_width && y >= 0 && y < src_height) { \
p_src2 = p_src + src_rowstride * y + 4 * x; \
r = p_src2[CAIRO_RED]; \
g = p_src2[CAIRO_GREEN]; \
b = p_src2[CAIRO_BLUE]; \
a = p_src2[CAIRO_ALPHA]; \
} \
else { \
r = r0; \
g = g0; \
b = b0; \
a = a0; \
}
half_new_width = new_width / 2.0;
half_new_height = new_height / 2.0;
half_src_width = src_width / 2.0;
half_src_height = src_height / 2.0;
cairo_surface_flush (rotated);
y = - half_new_height;
for (yi = 0; yi < new_height; yi++) {
if (task != NULL) {
gboolean cancelled;
double progress;
gth_async_task_get_data (task, NULL, &cancelled, NULL);
if (cancelled)
goto out;
progress = (double) yi / new_height;
gth_async_task_set_data (task, NULL, NULL, &progress);
}
p_new2 = p_new;
x = - half_new_width;
for (xi = 0; xi < new_width; xi++) {
x2 = cos_angle * x - sin_angle * y + half_src_width;
y2 = sin_angle * x + cos_angle * y + half_src_height;
if (high_quality) {
/* Bilinear interpolation. */
x2min = (int) x2;
y2min = (int) y2;
x2max = x2min + 1;
y2max = y2min + 1;
GET_VALUES (r00, g00, b00, a00, x2min, y2min);
GET_VALUES (r01, g01, b01, a01, x2max, y2min);
GET_VALUES (r10, g10, b10, a10, x2min, y2max);
GET_VALUES (r11, g11, b11, a11, x2max, y2max);
fx = x2 - x2min;
fy = y2 - y2min;
INTERPOLATE (r, r00, r01, r10, r11, fx, fy);
INTERPOLATE (g, g00, g01, g10, g11, fx, fy);
INTERPOLATE (b, b00, b01, b10, b11, fx, fy);
INTERPOLATE (a, a00, a01, a10, a11, fx, fy);
pixel = CAIRO_RGBA_TO_UINT32 (r, g, b, a);
memcpy (p_new2, &pixel, sizeof (guint32));
}
else {
/* Nearest neighbor */
x2min = GDOUBLE_ROUND_TO_INT (x2);
y2min = GDOUBLE_ROUND_TO_INT (y2);
GET_VALUES (p_new2[CAIRO_RED],
p_new2[CAIRO_GREEN],
p_new2[CAIRO_BLUE],
p_new2[CAIRO_ALPHA],
x2min,
y2min);
}
p_new2 += 4;
x += 1.0;
}
p_new += new_rowstride;
y += 1.0;
}
out:
cairo_surface_mark_dirty (rotated);
cairo_surface_destroy (image_with_background);
#undef INTERPOLATE
#undef GET_VALUES
return rotated;
}
/* Retrieve a frame and feed it into the pipeline
*/
static void
recorder_record_frame (ShellRecorder *recorder,
gboolean paint)
{
GstBuffer *buffer;
ClutterCapture *captures;
int n_captures;
cairo_surface_t *image;
guint size;
uint8_t *data;
GstMemory *memory;
int i;
GstClock *clock;
GstClockTime now, base_time;
g_return_if_fail (recorder->current_pipeline != NULL);
/* If we get into the red zone, stop buffering new frames; 13/16 is
* a bit more than the 3/4 threshold for a red indicator to keep the
* indicator from flashing between red and yellow. */
if (recorder->memory_used > (recorder->memory_target * 13) / 16)
return;
/* Drop frames to get down to something like the target frame rate; since frames
* are generated with VBlank sync, we don't have full control anyways, so we just
* drop frames if the interval since the last frame is less than 75% of the
* desired inter-frame interval.
*/
clock = gst_element_get_clock (recorder->current_pipeline->src);
/* If we have no clock yet, the pipeline is not yet in PLAYING */
if (!clock)
return;
base_time = gst_element_get_base_time (recorder->current_pipeline->src);
now = gst_clock_get_time (clock) - base_time;
gst_object_unref (clock);
if (GST_CLOCK_TIME_IS_VALID (recorder->last_frame_time) &&
now - recorder->last_frame_time < gst_util_uint64_scale_int (GST_SECOND, 3, 4 * recorder->framerate))
return;
recorder->last_frame_time = now;
clutter_stage_capture (recorder->stage, paint, &recorder->area,
&captures, &n_captures);
if (n_captures == 0)
return;
if (n_captures == 1)
image = cairo_surface_reference (captures[0].image);
else
image = shell_util_composite_capture_images (captures,
n_captures,
recorder->area.x,
recorder->area.y,
recorder->area.width,
recorder->area.height);
data = cairo_image_surface_get_data (image);
size = (cairo_image_surface_get_height (image) *
cairo_image_surface_get_stride (image));
for (i = 0; i < n_captures; i++)
cairo_surface_destroy (captures[i].image);
g_free (captures);
buffer = gst_buffer_new();
memory = gst_memory_new_wrapped (0, data, size, 0, size,
image,
(GDestroyNotify) cairo_surface_destroy);
gst_buffer_insert_memory (buffer, -1, memory);
GST_BUFFER_PTS(buffer) = now;
if (recorder->draw_cursor &&
!g_settings_get_boolean (recorder->a11y_settings, MAGNIFIER_ACTIVE_KEY))
recorder_draw_cursor (recorder, buffer);
shell_recorder_src_add_buffer (SHELL_RECORDER_SRC (recorder->current_pipeline->src), buffer);
gst_buffer_unref (buffer);
/* Reset the timeout that we used to avoid an overlong pause in the stream */
recorder_remove_redraw_timeout (recorder);
recorder_add_redraw_timeout (recorder);
}
void
draw_shadow (cairo_t* cr,
gdouble width,
gdouble height,
gint shadow_radius,
gint corner_radius)
{
cairo_surface_t* tmp_surface = NULL;
cairo_surface_t* new_surface = NULL;
cairo_pattern_t* pattern = NULL;
cairo_t* cr_surf = NULL;
cairo_matrix_t matrix;
raico_blur_t* blur = NULL;
tmp_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4 * shadow_radius,
4 * shadow_radius);
if (cairo_surface_status (tmp_surface) != CAIRO_STATUS_SUCCESS)
return;
cr_surf = cairo_create (tmp_surface);
if (cairo_status (cr_surf) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (tmp_surface);
return;
}
cairo_scale (cr_surf, 1.0f, 1.0f);
cairo_set_operator (cr_surf, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr_surf);
cairo_set_operator (cr_surf, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr_surf, 0.0f, 0.0f, 0.0f, 0.75f);
cairo_arc (cr_surf,
2 * shadow_radius,
2 * shadow_radius,
2.0f * corner_radius,
0.0f,
360.0f * (G_PI / 180.f));
cairo_fill (cr_surf);
cairo_destroy (cr_surf);
// create and setup blur
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, shadow_radius);
// now blur it
raico_blur_apply (blur, tmp_surface);
// blur no longer needed
raico_blur_destroy (blur);
new_surface = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (tmp_surface),
cairo_image_surface_get_format (tmp_surface),
cairo_image_surface_get_width (tmp_surface) / 2,
cairo_image_surface_get_height (tmp_surface) / 2,
cairo_image_surface_get_stride (tmp_surface));
pattern = cairo_pattern_create_for_surface (new_surface);
if (cairo_pattern_status (pattern) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (tmp_surface);
cairo_surface_destroy (new_surface);
return;
}
// top left
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
cairo_set_source (cr, pattern);
cairo_rectangle (cr,
0.0f,
0.0f,
width - 2 * shadow_radius,
2 * shadow_radius);
cairo_fill (cr);
// bottom left
cairo_matrix_init_scale (&matrix, 1.0f, -1.0f);
cairo_matrix_translate (&matrix, 0.0f, -height);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_rectangle (cr,
0.0f,
2 * shadow_radius,
2 * shadow_radius,
height - 2 * shadow_radius);
cairo_fill (cr);
// top right
cairo_matrix_init_scale (&matrix, -1.0f, 1.0f);
cairo_matrix_translate (&matrix, -width, 0.0f);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_rectangle (cr,
width - 2 * shadow_radius,
0.0f,
2 * shadow_radius,
height - 2 * shadow_radius);
cairo_fill (cr);
// bottom right
cairo_matrix_init_scale (&matrix, -1.0f, -1.0f);
cairo_matrix_translate (&matrix, -width, -height);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_rectangle (cr,
2 * shadow_radius,
height - 2 * shadow_radius,
width - 2 * shadow_radius,
2 * shadow_radius);
cairo_fill (cr);
// clean up
cairo_pattern_destroy (pattern);
cairo_surface_destroy (tmp_surface);
cairo_surface_destroy (new_surface);
}
static void
gimp_text_layer_render_layout (GimpTextLayer *layer,
GimpTextLayout *layout)
{
GimpDrawable *drawable = GIMP_DRAWABLE (layer);
GimpItem *item = GIMP_ITEM (layer);
GimpImage *image = gimp_item_get_image (item);
cairo_t *cr;
cairo_surface_t *surface;
PixelRegion layerPR;
const guchar *data;
GimpImageType layer_type;
gint layer_alpha_byte;
gint rowstride;
gint width;
gint height;
gpointer pr;
g_return_if_fail (gimp_drawable_has_alpha (drawable));
width = gimp_item_get_width (item);
height = gimp_item_get_height (item);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
cr = cairo_create (surface);
gimp_text_layout_render (layout, cr, layer->text->base_dir, FALSE);
cairo_destroy (cr);
pixel_region_init (&layerPR, gimp_drawable_get_tiles (drawable),
0, 0, width, height, TRUE);
layer_type = gimp_drawable_type (drawable);
layer_alpha_byte = layerPR.bytes - 1;
cairo_surface_flush (surface);
data = cairo_image_surface_get_data (surface);
rowstride = cairo_image_surface_get_stride (surface);
for (pr = pixel_regions_register (1, &layerPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
const guchar *src = data + layerPR.y * rowstride + layerPR.x * 4;
guchar *dest = layerPR.data;
gint rows = layerPR.h;
while (rows--)
{
const guchar *s = src;
guchar *d = dest;
gint w = layerPR.w;
while (w--)
{
guchar color[4];
GIMP_CAIRO_ARGB32_GET_PIXEL (s,
color[0],
color[1],
color[2],
color[3]);
gimp_image_transform_color (image,
layer_type, d, GIMP_RGB, color);
d[layer_alpha_byte] = color[3];
s += 4;
d += layerPR.bytes;
}
src += rowstride;
dest += layerPR.rowstride;
}
}
cairo_surface_destroy (surface);
gimp_drawable_update (drawable, 0, 0, width, height);
}
cairo_surface_t* guacenc_jpeg_decoder(unsigned char* data, int length) {
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
/* Create decompressor with standard error handling */
jpeg_create_decompress(&cinfo);
cinfo.err = jpeg_std_error(&jerr);
/* Read JPEG directly from memory buffer */
jpeg_mem_src(&cinfo, data, length);
/* Read and validate JPEG header */
if (!jpeg_read_header(&cinfo, TRUE)) {
guacenc_log(GUAC_LOG_WARNING, "Invalid JPEG data");
jpeg_destroy_decompress(&cinfo);
return NULL;
}
/* Begin decompression */
cinfo.out_color_space = JCS_RGB;
jpeg_start_decompress(&cinfo);
/* Pull JPEG dimensions from decompressor */
int width = cinfo.output_width;
int height = cinfo.output_height;
/* Allocate sufficient buffer space for one JPEG scanline */
unsigned char* jpeg_scanline = malloc(width * 3);
/* Create blank Cairo surface (no transparency in JPEG) */
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
width, height);
/* Pull underlying buffer and its stride */
int stride = cairo_image_surface_get_stride(surface);
unsigned char* row = cairo_image_surface_get_data(surface);
/* Read JPEG into surface */
while (cinfo.output_scanline < height) {
/* Read single scanline */
unsigned char* buffers[1] = { jpeg_scanline };
jpeg_read_scanlines(&cinfo, buffers, 1);
/* Copy scanline to Cairo surface */
guacenc_jpeg_copy_scanline(row, jpeg_scanline, width);
/* Advance to next row of Cairo surface */
row += stride;
}
/* Scanline buffer is no longer needed */
free(jpeg_scanline);
/* End decompression */
jpeg_finish_decompress(&cinfo);
/* Free decompressor */
jpeg_destroy_decompress(&cinfo);
/* JPEG was read successfully */
return surface;
}