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Move XRender based rendering of unstyled EffectFrame into scene_xrender

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This follows how it is done for OpenGL where the renderRoundBox() got
dropped some time ago.

New implementation implements the box with round corners using xrender
directly instead of using a QPainter on a QPixmap.
This commit is contained in:
Martin Gräßlin 2013-02-06 08:03:14 +01:00
parent 368de6842a
commit a1ac6df20e
4 changed files with 105 additions and 66 deletions
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58
libkwineffects/kwinxrenderutils.cpp
View file

@ -73,64 +73,6 @@ XRenderPicture xRenderBlendPicture(double opacity)
return _blendPicture;
}
static XRenderPicture *_circle[4] = {NULL, NULL, NULL, NULL};
#define DUMP_CNR(_SECT_, _W_, _H_, _XOFF_, _YOFF_)\
dump = QPixmap(_W_, _H_);\
dump.fill(Qt::transparent);\
p.begin(&dump);\
p.drawPixmap( 0, 0, tmp, _XOFF_, _YOFF_, _W_, _H_ );\
p.end();\
_circle[_SECT_] = new XRenderPicture(dump);
#define CS 8
static XRenderPicture *circle(int i)
{
if (!_circle[0]) {
QPixmap tmp(2 * CS, 2 * CS);
tmp.fill(Qt::transparent);
QPainter p(&tmp);
p.setRenderHint(QPainter::Antialiasing);
p.setPen(Qt::NoPen); p.setBrush(Qt::black);
p.drawEllipse(tmp.rect());
p.end();
QPixmap dump;
DUMP_CNR(0, CS, CS, 0, 0);
DUMP_CNR(1, CS, CS, CS, 0);
DUMP_CNR(2, CS, CS, CS, CS);
DUMP_CNR(3, CS, CS, 0, CS);
}
return _circle[i];
}
void xRenderRoundBox(Picture pict, const QRect &rect, int , const QColor &c)
{
XRenderPicture fill = xRenderFill(c);
int op = c.alpha() == 255 ? PictOpSrc : PictOpOver;
// TODO: implement second paramenter "roundness"
// so rather use ?? XRenderCompositeTriFan (dpy, op, src, dst, maskFormat, xSrc, ySrc,
//XPointFixed *points, npoint);
// this will require "points on a circle" calculation, however...
int s = qMin(CS, qMin(rect.height() / 2, rect.width() / 2));
int x, y, b, r;
rect.getCoords(&x, &y, &r, &b);
r -= (s - 1);
b -= (s - 1);
XRenderComposite(display(), PictOpOver, fill, *circle(0), pict, 0, 0, 0, 0, x, y, CS, CS);
XRenderComposite(display(), PictOpOver, fill, *circle(1), pict, 0, 0, CS - s, 0, r, y, s, s);
XRenderComposite(display(), PictOpOver, fill, *circle(2), pict, 0, 0, CS - s, CS - s, r, b, s, s);
XRenderComposite(display(), PictOpOver, fill, *circle(3), pict, 0, 0, 0, CS - s, x, b, s, s);
XRenderComposite(display(), op, fill, 0, pict, 0, 0, 0, 0, x + s, y, rect.width() - 2 * s, s);
XRenderComposite(display(), op, fill, 0, pict, 0, 0, 0, 0, x, y + s, rect.width(), rect.height() - 2 * s);
XRenderComposite(display(), op, fill, 0, pict, 0, 0, 0, 0, x + s, b, rect.width() - 2 * s, s);
}
#undef CS
#undef DUMP_CNR
// XRenderFind(Standard)Format() is a roundtrip, so cache the results
static XRenderPictFormat* renderformats[ 33 ];

4
libkwineffects/kwinxrenderutils.h
View file

@ -39,10 +39,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
namespace KWin
{
/**
* draws a round box on the renderscene
*/
KWIN_EXPORT void xRenderRoundBox(Picture pict, const QRect &rect, int round, const QColor &c);
/**
* dumps a QColor into a XRenderColor
*/

106
scene_xrender.cpp
View file

@ -37,6 +37,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <kxerrorhandler.h>
#include <QtGui/QPainter>
#include <QtCore/qmath.h>
namespace KWin
{
@ -93,6 +94,7 @@ SceneXrender::~SceneXrender()
m_overlayWindow->destroy();
return;
}
SceneXrender::EffectFrame::cleanup();
XRenderFreePicture(display(), front);
XRenderFreePicture(display(), buffer);
buffer = None;
@ -727,6 +729,8 @@ void SceneXrender::screenGeometryChanged(const QSize &size)
// SceneXrender::EffectFrame
//****************************************
XRenderPicture *SceneXrender::EffectFrame::s_effectFrameCircle = NULL;
SceneXrender::EffectFrame::EffectFrame(EffectFrameImpl* frame)
: Scene::EffectFrame(frame)
{
@ -744,6 +748,12 @@ SceneXrender::EffectFrame::~EffectFrame()
delete m_selectionPicture;
}
void SceneXrender::EffectFrame::cleanup()
{
delete s_effectFrameCircle;
s_effectFrameCircle = NULL;
}
void SceneXrender::EffectFrame::free()
{
delete m_picture;
@ -792,10 +802,9 @@ void SceneXrender::EffectFrame::render(QRegion region, double opacity, double fr
}
// Render the actual frame
if (m_effectFrame->style() == EffectFrameUnstyled)
xRenderRoundBox(effects->xrenderBufferPicture(), m_effectFrame->geometry().adjusted(-5, -5, 5, 5),
5, QColor(0, 0, 0, int(opacity * frameOpacity * 255)));
else if (m_effectFrame->style() == EffectFrameStyled) {
if (m_effectFrame->style() == EffectFrameUnstyled) {
renderUnstyled(effects->xrenderBufferPicture(), m_effectFrame->geometry(), opacity * frameOpacity);
} else if (m_effectFrame->style() == EffectFrameStyled) {
if (!m_picture) { // Lazy creation
updatePicture();
}
@ -844,6 +853,95 @@ void SceneXrender::EffectFrame::render(QRegion region, double opacity, double fr
}
}
void SceneXrender::EffectFrame::renderUnstyled(xcb_render_picture_t pict, const QRect &rect, qreal opacity)
{
const int roundness = 5;
const QRect area = rect.adjusted(-roundness, -roundness, roundness, roundness);
xcb_rectangle_t rects[3];
// center
rects[0].x = area.left();
rects[0].y = area.top() + roundness;
rects[0].width = area.width();
rects[0].height = area.height() - roundness * 2;
// top
rects[1].x = area.left() + roundness;
rects[1].y = area.top();
rects[1].width = area.width() - roundness * 2;
rects[1].height = roundness;
// bottom
rects[2].x = area.left() + roundness;
rects[2].y = area.top() + area.height() - roundness;
rects[2].width = area.width() - roundness * 2;
rects[2].height = roundness;
xcb_render_color_t color = {0, 0, 0, uint16_t(opacity * 0xffff)};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_OVER, pict, color, 3, rects);
if (!s_effectFrameCircle) {
// create the circle
const int diameter = roundness * 2;
xcb_pixmap_t pix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), 32, pix, rootWindow(), diameter, diameter);
s_effectFrameCircle = new XRenderPicture(pix, 32);
xcb_free_pixmap(connection(), pix);
// clear it with transparent
xcb_rectangle_t xrect = {0, 0, diameter, diameter};
xcb_render_color_t tranparent = {0, 0, 0, 0};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, *s_effectFrameCircle, tranparent, 1, &xrect);
static int num_segments = 80;
static qreal theta = 2 * M_PI / qreal(num_segments);
static qreal c = qCos(theta); //precalculate the sine and cosine
static qreal s = qSin(theta);
qreal t;
qreal x = roundness;//we start at angle = 0
qreal y = 0;
#define DOUBLE_TO_FIXED(d) ((xcb_render_fixed_t) ((d) * 65536))
QVector<xcb_render_pointfix_t> points;
xcb_render_pointfix_t point;
point.x = DOUBLE_TO_FIXED(roundness);
point.y = DOUBLE_TO_FIXED(roundness);
points << point;
for (int ii = 0; ii <= num_segments; ++ii) {
point.x = DOUBLE_TO_FIXED(x + roundness);
point.y = DOUBLE_TO_FIXED(y + roundness);
points << point;
//apply the rotation matrix
t = x;
x = c * x - s * y;
y = s * t + c * y;
}
XRenderPicture fill = xRenderFill(Qt::black);
xcb_render_tri_fan(connection(), XCB_RENDER_PICT_OP_OVER, fill, *s_effectFrameCircle,
0, 0, 0, points.count(), points.constData());
#undef DOUBLE_TO_FIXED
}
// TODO: merge alpha mask with SceneXrender::Window::alphaMask
// alpha mask
xcb_pixmap_t pix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), 8, pix, rootWindow(), 1, 1);
XRenderPicture alphaMask(pix, 8);
xcb_free_pixmap(connection(), pix);
const uint32_t values[] = {true};
xcb_render_change_picture(connection(), alphaMask, XCB_RENDER_CP_REPEAT, values);
color.alpha = int(opacity * 0xffff);
xcb_rectangle_t xrect = {0, 0, 1, 1};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, alphaMask, color, 1, &xrect);
// TODO: replace by lambda
#define RENDER_CIRCLE(srcX, srcY, destX, destY) \
xcb_render_composite(connection(), XCB_RENDER_PICT_OP_OVER, *s_effectFrameCircle, alphaMask, \
pict, srcX, srcY, 0, 0, destX, destY, roundness, roundness)
RENDER_CIRCLE(0, 0, area.left(), area.top());
RENDER_CIRCLE(0, roundness, area.left(), area.top() + area.height() - roundness);
RENDER_CIRCLE(roundness, 0, area.left() + area.width() - roundness, area.top());
RENDER_CIRCLE(roundness, roundness,
area.left() + area.width() - roundness, area.top() + area.height() - roundness);
#undef RENDER_CIRCLE
}
void SceneXrender::EffectFrame::updatePicture()
{
delete m_picture;

3
scene_xrender.h
View file

@ -113,15 +113,18 @@ public:
virtual void crossFadeIcon();
virtual void crossFadeText();
virtual void render(QRegion region, double opacity, double frameOpacity);
static void cleanup();
private:
void updatePicture();
void updateTextPicture();
void renderUnstyled(xcb_render_picture_t pict, const QRect &rect, qreal opacity);
XRenderPicture* m_picture;
XRenderPicture* m_textPicture;
XRenderPicture* m_iconPicture;
XRenderPicture* m_selectionPicture;
static XRenderPicture* s_effectFrameCircle;
};
inline