/*
* Copyright © 2000 SuSE, Inc.
* Copyright © 2007 Red Hat, Inc.
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * 2005 Lars Knoll & Zack Rusin, Trolltech
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
- * documentation, and that the name of SuSE not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission. SuSE makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
*
- * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
*/
-
#include <config.h>
#include <stdlib.h>
+#include <math.h>
#include "pixman-private.h"
static void
+conical_gradient_get_scanline_32 (pixman_image_t *image, int x, int y, int width,
+ uint32_t *buffer, uint32_t *mask, uint32_t maskBits)
+{
+ source_image_t *source = (source_image_t *)image;
+ gradient_t *gradient = (gradient_t *)source;
+ conical_gradient_t *conical = (conical_gradient_t *)image;
+ uint32_t *end = buffer + width;
+ GradientWalker walker;
+ pixman_bool_t affine = TRUE;
+ double cx = 1.;
+ double cy = 0.;
+ double cz = 0.;
+ double rx = x + 0.5;
+ double ry = y + 0.5;
+ double rz = 1.;
+ double a = conical->angle/(180.*65536);
+
+ _pixman_gradient_walker_init (&walker, gradient, source->common.repeat);
+
+ if (source->common.transform) {
+ pixman_vector_t v;
+ /* reference point is the center of the pixel */
+ v.vector[0] = pixman_int_to_fixed(x) + pixman_fixed_1/2;
+ v.vector[1] = pixman_int_to_fixed(y) + pixman_fixed_1/2;
+ v.vector[2] = pixman_fixed_1;
+ if (!pixman_transform_point_3d (source->common.transform, &v))
+ return;
+
+ cx = source->common.transform->matrix[0][0]/65536.;
+ cy = source->common.transform->matrix[1][0]/65536.;
+ cz = source->common.transform->matrix[2][0]/65536.;
+ rx = v.vector[0]/65536.;
+ ry = v.vector[1]/65536.;
+ rz = v.vector[2]/65536.;
+ affine = source->common.transform->matrix[2][0] == 0 && v.vector[2] == pixman_fixed_1;
+ }
+
+ if (affine) {
+ rx -= conical->center.x/65536.;
+ ry -= conical->center.y/65536.;
+
+ while (buffer < end) {
+ double angle;
+
+ if (!mask || *mask++ & maskBits)
+ {
+ pixman_fixed_48_16_t t;
+
+ angle = atan2(ry, rx) + a;
+ t = (pixman_fixed_48_16_t) (angle * (65536. / (2*M_PI)));
+
+ *(buffer) = _pixman_gradient_walker_pixel (&walker, t);
+ }
+
+ ++buffer;
+ rx += cx;
+ ry += cy;
+ }
+ } else {
+ while (buffer < end) {
+ double x, y;
+ double angle;
+
+ if (!mask || *mask++ & maskBits)
+ {
+ pixman_fixed_48_16_t t;
+
+ if (rz != 0) {
+ x = rx/rz;
+ y = ry/rz;
+ } else {
+ x = y = 0.;
+ }
+ x -= conical->center.x/65536.;
+ y -= conical->center.y/65536.;
+ angle = atan2(y, x) + a;
+ t = (pixman_fixed_48_16_t) (angle * (65536. / (2*M_PI)));
+
+ *(buffer) = _pixman_gradient_walker_pixel (&walker, t);
+ }
+
+ ++buffer;
+ rx += cx;
+ ry += cy;
+ rz += cz;
+ }
+ }
+}
+
+static void
conical_gradient_property_changed (pixman_image_t *image)
{
- image->common.get_scanline_32 = (scanFetchProc)pixmanFetchGradient;
+ image->common.get_scanline_32 = (scanFetchProc)conical_gradient_get_scanline_32;
image->common.get_scanline_64 = (scanFetchProc)_pixman_image_get_scanline_64_generic;
}
{
pixman_image_t *image = _pixman_image_allocate();
conical_gradient_t *conical;
-
+
if (!image)
return NULL;
-
+
conical = &image->conical;
-
+
if (!_pixman_init_gradient (&conical->common, stops, n_stops))
{
free (image);
return NULL;
}
-
+
image->type = CONICAL;
conical->center = *center;
conical->angle = angle;
-
+
image->common.property_changed = conical_gradient_property_changed;
-
+
conical_gradient_property_changed (image);
return image;
+++ /dev/null
-/*
- *
- * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
- * 2005 Lars Knoll & Zack Rusin, Trolltech
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
- * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdlib.h>
-#include <math.h>
-
-#include "pixman-private.h"
-
-void
-pixmanFetchGradient(gradient_t *gradient, int x, int y, int width,
- uint32_t *buffer, uint32_t *mask, uint32_t maskBits)
-{
- GradientWalker walker;
- uint32_t *end = buffer + width;
- source_image_t *pict;
-
- pict = (source_image_t *)gradient;
-
- _pixman_gradient_walker_init (&walker, gradient, pict->common.repeat);
-
- if (pict->common.type == LINEAR) {
- assert (0);
- } else {
- if (pict->common.type == RADIAL) {
- assert (0);
- } else /* SourcePictTypeConical */ {
- /* radial or conical */
- pixman_bool_t affine = TRUE;
- double cx = 1.;
- double cy = 0.;
- double cz = 0.;
- double rx = x + 0.5;
- double ry = y + 0.5;
- double rz = 1.;
-
- if (pict->common.transform) {
- pixman_vector_t v;
- /* reference point is the center of the pixel */
- v.vector[0] = pixman_int_to_fixed(x) + pixman_fixed_1/2;
- v.vector[1] = pixman_int_to_fixed(y) + pixman_fixed_1/2;
- v.vector[2] = pixman_fixed_1;
- if (!pixman_transform_point_3d (pict->common.transform, &v))
- return;
-
- cx = pict->common.transform->matrix[0][0]/65536.;
- cy = pict->common.transform->matrix[1][0]/65536.;
- cz = pict->common.transform->matrix[2][0]/65536.;
- rx = v.vector[0]/65536.;
- ry = v.vector[1]/65536.;
- rz = v.vector[2]/65536.;
- affine = pict->common.transform->matrix[2][0] == 0 && v.vector[2] == pixman_fixed_1;
- }
-
- conical_gradient_t *conical = (conical_gradient_t *)pict;
- double a = conical->angle/(180.*65536);
- if (affine) {
- rx -= conical->center.x/65536.;
- ry -= conical->center.y/65536.;
-
- while (buffer < end) {
- double angle;
-
- if (!mask || *mask++ & maskBits)
- {
- pixman_fixed_48_16_t t;
-
- angle = atan2(ry, rx) + a;
- t = (pixman_fixed_48_16_t) (angle * (65536. / (2*M_PI)));
-
- *(buffer) = _pixman_gradient_walker_pixel (&walker, t);
- }
-
- ++buffer;
- rx += cx;
- ry += cy;
- }
- } else {
- while (buffer < end) {
- double x, y;
- double angle;
-
- if (!mask || *mask++ & maskBits)
- {
- pixman_fixed_48_16_t t;
-
- if (rz != 0) {
- x = rx/rz;
- y = ry/rz;
- } else {
- x = y = 0.;
- }
- x -= conical->center.x/65536.;
- y -= conical->center.y/65536.;
- angle = atan2(y, x) + a;
- t = (pixman_fixed_48_16_t) (angle * (65536. / (2*M_PI)));
-
- *(buffer) = _pixman_gradient_walker_pixel (&walker, t);
- }
-
- ++buffer;
- rx += cx;
- ry += cy;
- rz += cz;
- }
- }
- }
- }
-}
projects / platform / upstream / pixman.git / commitdiff