static PyObject *
solid_pattern_get_rgba (PycairoSolidPattern *o)
{
double red, green, blue, alpha;
cairo_pattern_get_rgba (o->pattern, &red, &green, &blue, &alpha);
return Py_BuildValue("(dddd)", red, green, blue, alpha);
}
void CairoDevice::PushPenColor( const VGColor & color)
{
double r, g, b, a;
cairo_pattern_get_rgba (cairo_get_source(fNativeDevice), &r, &g, &b, &a);
fPenColorStack.push (VGColor(cc2c(r), cc2c(g), cc2c(b), cc2c(a)));
SelectPenColor (color);
}
void CairoRenderer::Stroke(void)
{
double r, g, b, a;
cairo_pattern_get_rgba(cairo_get_source(m_pCairo), &r, &g, &b, &a);
cairo_set_source_rgba(m_pCairo, m_pStrokeColor[0], m_pStrokeColor[1], m_pStrokeColor[2], 1.0);
cairo_stroke(m_pCairo);
cairo_set_source_rgba(m_pCairo, r, g, b, 1.0);
}
bool
gfxContext::GetDeviceColor(gfxRGBA& c)
{
return cairo_pattern_get_rgba(cairo_get_source(mCairo),
&c.r,
&c.g,
&c.b,
&c.a) == CAIRO_STATUS_SUCCESS;
}
static VALUE
cr_solid_pattern_get_rgba (VALUE self)
{
double red, green, blue, alpha;
rb_cairo_check_status (cairo_pattern_get_rgba (_SELF (self),
&red, &green, &blue, &alpha));
return rb_ary_new3 (4,
rb_float_new (red), rb_float_new (green),
rb_float_new (blue), rb_float_new (alpha));
}
static int cairo_pattern_get_rgba_l( lua_State* L )
{
double red = 0.0;
double green = 0.0;
double blue = 0.0;
double alpha = 0.0;
lua_cairo_pattern_t* lcp = lua_cairo_pattern_check( L, 1 );
if ( cairo_pattern_get_rgba( lcp->pattern, &red, &green, &blue, &alpha ) ) {
luaL_argerror( L, 1, "pattern is not a solid color pattern" );
}
lua_pushnumber( L, red );
lua_pushnumber( L, green );
lua_pushnumber( L, blue );
lua_pushnumber( L, alpha );
return( 4 );
}
static void
_gtk_pixel_cache_create_surface_if_needed (GtkPixelCache *cache,
GdkWindow *window,
cairo_rectangle_int_t *view_rect,
cairo_rectangle_int_t *canvas_rect)
{
cairo_rectangle_int_t rect;
int surface_w, surface_h;
cairo_content_t content;
cairo_pattern_t *bg;
double red, green, blue, alpha;
content = CAIRO_CONTENT_COLOR_ALPHA;
bg = gdk_window_get_background_pattern (window);
if (bg != NULL &&
cairo_pattern_get_type (bg) == CAIRO_PATTERN_TYPE_SOLID &&
cairo_pattern_get_rgba (bg, &red, &green, &blue, &alpha) == CAIRO_STATUS_SUCCESS &&
alpha == 1.0)
content = CAIRO_CONTENT_COLOR;
surface_w = view_rect->width;
if (canvas_rect->width > surface_w)
surface_w = MIN (surface_w + EXTRA_SIZE, canvas_rect->width);
surface_h = view_rect->height;
if (canvas_rect->height > surface_h)
surface_h = MIN (surface_h + EXTRA_SIZE, canvas_rect->height);
/* If current surface can't fit view_rect or is too large, kill it */
if (cache->surface != NULL &&
(cairo_surface_get_content (cache->surface) != content ||
cache->surface_w < view_rect->width ||
cache->surface_w > surface_w + ALLOW_LARGER_SIZE ||
cache->surface_h < view_rect->height ||
cache->surface_h > surface_h + ALLOW_LARGER_SIZE ||
cache->surface_scale != gdk_window_get_scale_factor (window)))
{
cairo_surface_destroy (cache->surface);
cache->surface = NULL;
if (cache->surface_dirty)
cairo_region_destroy (cache->surface_dirty);
cache->surface_dirty = NULL;
}
/* Don't allocate a surface if view >= canvas, as we won't
be scrolling then anyway */
if (cache->surface == NULL &&
(view_rect->width < canvas_rect->width ||
view_rect->height < canvas_rect->height))
{
cache->surface_x = -canvas_rect->x;
cache->surface_y = -canvas_rect->y;
cache->surface_w = surface_w;
cache->surface_h = surface_h;
cache->surface_scale = gdk_window_get_scale_factor (window);
cache->surface =
gdk_window_create_similar_surface (window, content,
surface_w, surface_h);
rect.x = 0;
rect.y = 0;
rect.width = surface_w;
rect.height = surface_h;
cache->surface_dirty =
cairo_region_create_rectangle (&rect);
}
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
const cairo_test_context_t *ctx = cairo_test_get_context (cr);
cairo_status_t status;
cairo_pattern_t *pat;
/* Test pattern_get_rgba */
{
double r, g, b, a;
pat = cairo_pattern_create_rgba (0.2, 0.3, 0.4, 0.5);
status = cairo_pattern_get_rgba (pat, &r, &g, &b, &a);
CHECK_SUCCESS;
if (!CAIRO_TEST_DOUBLE_EQUALS(r,0.2) ||
!CAIRO_TEST_DOUBLE_EQUALS(g,0.3) ||
!CAIRO_TEST_DOUBLE_EQUALS(b,0.4) ||
!CAIRO_TEST_DOUBLE_EQUALS(a,0.5)) {
cairo_test_log (ctx, "Error: cairo_pattern_get_rgba returned unexepcted results: %g, %g, %g, %g\n",
r, g, b, a);
return CAIRO_TEST_FAILURE;
}
cairo_pattern_destroy (pat);
}
/* Test pattern_get_surface */
{
cairo_surface_t *surf;
pat = cairo_pattern_create_for_surface (cairo_get_target (cr));
status = cairo_pattern_get_surface (pat, &surf);
CHECK_SUCCESS;
if (surf != cairo_get_target (cr)) {
cairo_test_log (ctx, "Error: cairo_pattern_get_resurface returned wrong surface\n");
return CAIRO_TEST_FAILURE;
}
cairo_pattern_destroy (pat);
}
/* Test get_color_stops & linear_get_points */
{
int i;
double x0, y0, x1, y1;
double expected_values[15] = { 0.0, 0.2, 0.4, 0.2, 1.0,
0.5, 0.4, 0.5, 0.2, 0.5,
1.0, 0.2, 0.4, 0.5, 0.2
};
double new_buf[15];
pat = cairo_pattern_create_linear (1.0, 2.0, 3.0, 4.0);
for (i = 0; i < 3; i++) {
cairo_pattern_add_color_stop_rgba (pat,
expected_values[i*5+0],
expected_values[i*5+1],
expected_values[i*5+2],
expected_values[i*5+3],
expected_values[i*5+4]);
}
status = cairo_pattern_get_linear_points (pat, &x0, &y0, &x1, &y1);
CHECK_SUCCESS;
if (!CAIRO_TEST_DOUBLE_EQUALS(x0,1.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(y0,2.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(x1,3.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(y1,4.0))
return CAIRO_TEST_FAILURE;
status = cairo_pattern_get_color_stop_count (pat, &i);
CHECK_SUCCESS;
if (i != 3)
return CAIRO_TEST_FAILURE;
for (i = 0; i < 3; i++) {
status = cairo_pattern_get_color_stop_rgba (pat, i,
&new_buf[i*5+0],
&new_buf[i*5+1],
&new_buf[i*5+2],
&new_buf[i*5+3],
&new_buf[i*5+4]);
CHECK_SUCCESS;
}
status = cairo_pattern_get_color_stop_rgba (pat, 5, NULL, NULL, NULL, NULL, NULL);
if (status != CAIRO_STATUS_INVALID_INDEX)
return CAIRO_TEST_FAILURE;
if (!double_buf_equal (ctx, new_buf, expected_values, sizeof(expected_values)/sizeof(double)) != 0)
return CAIRO_TEST_FAILURE;
cairo_pattern_destroy (pat);
}
/* Test radial_get_circles */
{
double a, b, c, d, e, f;
pat = cairo_pattern_create_radial (1, 2, 3,
4, 5, 6);
status = cairo_pattern_get_radial_circles (pat, &a, &b, &c, &d, &e, &f);
CHECK_SUCCESS;
if (!CAIRO_TEST_DOUBLE_EQUALS(a,1.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(b,2.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(c,3.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(d,4.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(e,5.0) ||
!CAIRO_TEST_DOUBLE_EQUALS(f,6.0))
return CAIRO_TEST_FAILURE;
cairo_pattern_destroy (pat);
}
cairo_set_source_rgb (cr, 0, 1, 0);
cairo_paint (cr);
return CAIRO_TEST_SUCCESS;
}