--- a/src/gui/painting/qblendfunctions.cpp Wed Jun 23 19:07:03 2010 +0300
+++ b/src/gui/painting/qblendfunctions.cpp Tue Jul 06 15:10:48 2010 +0300
@@ -40,7 +40,7 @@
****************************************************************************/
#include <qmath.h>
-#include "qdrawhelper_p.h"
+#include "qblendfunctions_p.h"
QT_BEGIN_NAMESPACE
@@ -88,6 +88,8 @@
struct Blend_RGB16_on_RGB16_NoAlpha {
inline void write(quint16 *dst, quint16 src) { *dst = src; }
+
+ inline void flush(void *) {}
};
struct Blend_RGB16_on_RGB16_ConstAlpha {
@@ -100,6 +102,8 @@
*dst = BYTE_MUL_RGB16(src, m_alpha) + BYTE_MUL_RGB16(*dst, m_ialpha);
}
+ inline void flush(void *) {}
+
quint32 m_alpha;
quint32 m_ialpha;
};
@@ -114,6 +118,8 @@
*dst = s;
}
}
+
+ inline void flush(void *) {}
};
struct Blend_ARGB24_on_RGB16_SourceAndConstAlpha {
@@ -132,6 +138,8 @@
}
}
+ inline void flush(void *) {}
+
quint32 m_alpha;
};
@@ -145,6 +153,8 @@
*dst = s;
}
}
+
+ inline void flush(void *) {}
};
struct Blend_ARGB32_on_RGB16_SourceAndConstAlpha {
@@ -163,99 +173,11 @@
}
}
+ inline void flush(void *) {}
+
quint32 m_alpha;
};
-template <typename SRC, typename T>
-void qt_scale_image_16bit(uchar *destPixels, int dbpl,
- const uchar *srcPixels, int sbpl,
- const QRectF &targetRect,
- const QRectF &srcRect,
- const QRect &clip,
- T blender)
-{
- qreal sx = targetRect.width() / (qreal) srcRect.width();
- qreal sy = targetRect.height() / (qreal) srcRect.height();
-
- int ix = 0x00010000 / sx;
- int iy = 0x00010000 / sy;
-
-// qDebug() << "scale:" << endl
-// << " - target" << targetRect << endl
-// << " - source" << srcRect << endl
-// << " - clip" << clip << endl
-// << " - sx=" << sx << " sy=" << sy << " ix=" << ix << " iy=" << iy;
-
- int cx1 = clip.x();
- int cx2 = clip.x() + clip.width();
- int cy1 = clip.top();
- int cy2 = clip.y() + clip.height();
-
- int tx1 = qRound(targetRect.left());
- int tx2 = qRound(targetRect.right());
- int ty1 = qRound(targetRect.top());
- int ty2 = qRound(targetRect.bottom());
-
- if (tx2 < tx1)
- qSwap(tx2, tx1);
-
- if (ty2 < ty1)
- qSwap(ty2, ty1);
-
- if (tx1 < cx1)
- tx1 = cx1;
-
- if (tx2 >= cx2)
- tx2 = cx2;
-
- if (tx1 >= tx2)
- return;
-
- if (ty1 < cy1)
- ty1 = cy1;
-
- if (ty2 >= cy2)
- ty2 = cy2;
-
- if (ty1 >= ty2)
- return;
-
- int h = ty2 - ty1;
- int w = tx2 - tx1;
-
-
- quint32 basex;
- quint32 srcy;
-
- if (sx < 0) {
- int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;
- basex = quint32(srcRect.right() * 65536) + dstx;
- } else {
- int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;
- basex = quint32(srcRect.left() * 65536) + dstx;
- }
- if (sy < 0) {
- int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;
- srcy = quint32(srcRect.bottom() * 65536) + dsty;
- } else {
- int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;
- srcy = quint32(srcRect.top() * 65536) + dsty;
- }
-
- quint16 *dst = ((quint16 *) (destPixels + ty1 * dbpl)) + tx1;
-
- while (h--) {
- const SRC *src = (const SRC *) (srcPixels + (srcy >> 16) * sbpl);
- int srcx = basex;
- for (int x=0; x<w; ++x) {
- blender.write(&dst[x], src[srcx >> 16]);
- srcx += ix;
- }
- dst = (quint16 *)(((uchar *) dst) + dbpl);
- srcy += iy;
- }
-}
-
void qt_scale_image_rgb16_on_rgb16(uchar *destPixels, int dbpl,
const uchar *srcPixels, int sbpl,
const QRectF &targetRect,
@@ -447,10 +369,10 @@
-static void qt_blend_argb32_on_rgb16_const_alpha(uchar *destPixels, int dbpl,
- const uchar *srcPixels, int sbpl,
- int w, int h,
- int const_alpha)
+void qt_blend_argb32_on_rgb16_const_alpha(uchar *destPixels, int dbpl,
+ const uchar *srcPixels, int sbpl,
+ int w, int h,
+ int const_alpha)
{
quint16 *dst = (quint16 *) destPixels;
const quint32 *src = (const quint32 *) srcPixels;
@@ -643,6 +565,8 @@
struct Blend_RGB32_on_RGB32_NoAlpha {
inline void write(quint32 *dst, quint32 src) { *dst = src; }
+
+ inline void flush(void *) {}
};
struct Blend_RGB32_on_RGB32_ConstAlpha {
@@ -655,6 +579,8 @@
*dst = BYTE_MUL(src, m_alpha) + BYTE_MUL(*dst, m_ialpha);
}
+ inline void flush(void *) {}
+
quint32 m_alpha;
quint32 m_ialpha;
};
@@ -663,6 +589,8 @@
inline void write(quint32 *dst, quint32 src) {
*dst = src + BYTE_MUL(*dst, qAlpha(~src));
}
+
+ inline void flush(void *) {}
};
struct Blend_ARGB32_on_ARGB32_SourceAndConstAlpha {
@@ -676,98 +604,12 @@
*dst = src + BYTE_MUL(*dst, qAlpha(~src));
}
+ inline void flush(void *) {}
+
quint32 m_alpha;
quint32 m_ialpha;
};
-template <typename T> void qt_scale_image_32bit(uchar *destPixels, int dbpl,
- const uchar *srcPixels, int sbpl,
- const QRectF &targetRect,
- const QRectF &srcRect,
- const QRect &clip,
- T blender)
-{
- qreal sx = targetRect.width() / (qreal) srcRect.width();
- qreal sy = targetRect.height() / (qreal) srcRect.height();
-
- int ix = 0x00010000 / sx;
- int iy = 0x00010000 / sy;
-
-// qDebug() << "scale:" << endl
-// << " - target" << targetRect << endl
-// << " - source" << srcRect << endl
-// << " - clip" << clip << endl
-// << " - sx=" << sx << " sy=" << sy << " ix=" << ix << " iy=" << iy;
-
- int cx1 = clip.x();
- int cx2 = clip.x() + clip.width();
- int cy1 = clip.top();
- int cy2 = clip.y() + clip.height();
-
- int tx1 = qRound(targetRect.left());
- int tx2 = qRound(targetRect.right());
- int ty1 = qRound(targetRect.top());
- int ty2 = qRound(targetRect.bottom());
-
- if (tx2 < tx1)
- qSwap(tx2, tx1);
-
- if (ty2 < ty1)
- qSwap(ty2, ty1);
-
- if (tx1 < cx1)
- tx1 = cx1;
-
- if (tx2 >= cx2)
- tx2 = cx2;
-
- if (tx1 >= tx2)
- return;
-
- if (ty1 < cy1)
- ty1 = cy1;
-
- if (ty2 >= cy2)
- ty2 = cy2;
-
- if (ty1 >= ty2)
- return;
-
- int h = ty2 - ty1;
- int w = tx2 - tx1;
-
- quint32 basex;
- quint32 srcy;
-
- if (sx < 0) {
- int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;
- basex = quint32(srcRect.right() * 65536) + dstx;
- } else {
- int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;
- basex = quint32(srcRect.left() * 65536) + dstx;
- }
- if (sy < 0) {
- int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;
- srcy = quint32(srcRect.bottom() * 65536) + dsty;
- } else {
- int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;
- srcy = quint32(srcRect.top() * 65536) + dsty;
- }
-
- quint32 *dst = ((quint32 *) (destPixels + ty1 * dbpl)) + tx1;
-
- while (h--) {
- const uint *src = (const quint32 *) (srcPixels + (srcy >> 16) * sbpl);
- int srcx = basex;
- for (int x=0; x<w; ++x) {
- blender.write(&dst[x], src[srcx >> 16]);
- srcx += ix;
- }
- dst = (quint32 *)(((uchar *) dst) + dbpl);
- srcy += iy;
- }
-}
-
void qt_scale_image_rgb32_on_rgb32(uchar *destPixels, int dbpl,
const uchar *srcPixels, int sbpl,
const QRectF &targetRect,
@@ -818,244 +660,6 @@
}
}
-struct QTransformImageVertex
-{
- qreal x, y, u, v; // destination coordinates (x, y) and source coordinates (u, v)
-};
-
-template <class SrcT, class DestT, class Blender>
-void qt_transform_image_rasterize(DestT *destPixels, int dbpl,
- const SrcT *srcPixels, int sbpl,
- const QTransformImageVertex &topLeft, const QTransformImageVertex &bottomLeft,
- const QTransformImageVertex &topRight, const QTransformImageVertex &bottomRight,
- const QRect &sourceRect,
- const QRect &clip,
- qreal topY, qreal bottomY,
- int dudx, int dvdx, int dudy, int dvdy, int u0, int v0,
- Blender blender)
-{
- int fromY = qMax(qRound(topY), clip.top());
- int toY = qMin(qRound(bottomY), clip.top() + clip.height());
- if (fromY >= toY)
- return;
-
- qreal leftSlope = (bottomLeft.x - topLeft.x) / (bottomLeft.y - topLeft.y);
- qreal rightSlope = (bottomRight.x - topRight.x) / (bottomRight.y - topRight.y);
- int dx_l = int(leftSlope * 0x10000);
- int dx_r = int(rightSlope * 0x10000);
- int x_l = int((topLeft.x + (0.5 + fromY - topLeft.y) * leftSlope + 0.5) * 0x10000);
- int x_r = int((topRight.x + (0.5 + fromY - topRight.y) * rightSlope + 0.5) * 0x10000);
-
- int fromX, toX, x1, x2, u, v, i, ii;
- DestT *line;
- for (int y = fromY; y < toY; ++y) {
- line = reinterpret_cast<DestT *>(reinterpret_cast<uchar *>(destPixels) + y * dbpl);
-
- fromX = qMax(x_l >> 16, clip.left());
- toX = qMin(x_r >> 16, clip.left() + clip.width());
- if (fromX < toX) {
- // Because of rounding, we can get source coordinates outside the source image.
- // Clamp these coordinates to the source rect to avoid segmentation fault and
- // garbage on the screen.
-
- // Find the first pixel on the current scan line where the source coordinates are within the source rect.
- x1 = fromX;
- u = x1 * dudx + y * dudy + u0;
- v = x1 * dvdx + y * dvdy + v0;
- for (; x1 < toX; ++x1) {
- int uu = u >> 16;
- int vv = v >> 16;
- if (uu >= sourceRect.left() && uu < sourceRect.left() + sourceRect.width()
- && vv >= sourceRect.top() && vv < sourceRect.top() + sourceRect.height()) {
- break;
- }
- u += dudx;
- v += dvdx;
- }
-
- // Find the last pixel on the current scan line where the source coordinates are within the source rect.
- x2 = toX;
- u = (x2 - 1) * dudx + y * dudy + u0;
- v = (x2 - 1) * dvdx + y * dvdy + v0;
- for (; x2 > x1; --x2) {
- int uu = u >> 16;
- int vv = v >> 16;
- if (uu >= sourceRect.left() && uu < sourceRect.left() + sourceRect.width()
- && vv >= sourceRect.top() && vv < sourceRect.top() + sourceRect.height()) {
- break;
- }
- u -= dudx;
- v -= dvdx;
- }
-
- // Set up values at the beginning of the scan line.
- u = fromX * dudx + y * dudy + u0;
- v = fromX * dvdx + y * dvdy + v0;
- line += fromX;
-
- // Beginning of the scan line, with per-pixel checks.
- i = x1 - fromX;
- while (i) {
- int uu = qBound(sourceRect.left(), u >> 16, sourceRect.left() + sourceRect.width() - 1);
- int vv = qBound(sourceRect.top(), v >> 16, sourceRect.top() + sourceRect.height() - 1);
- blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + vv * sbpl)[uu]);
- u += dudx;
- v += dvdx;
- ++line;
- --i;
- }
-
- // Middle of the scan line, without checks.
- // Manual loop unrolling.
- i = x2 - x1;
- ii = i >> 3;
- while (ii) {
- blender.write(&line[0], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[1], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[2], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[3], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[4], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[5], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[6], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- blender.write(&line[7], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;
- line += 8;
- --ii;
- }
- switch (i & 7) {
- case 7: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- case 6: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- case 5: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- case 4: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- case 3: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- case 2: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- case 1: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;
- }
-
- // End of the scan line, with per-pixel checks.
- i = toX - x2;
- while (i) {
- int uu = qBound(sourceRect.left(), u >> 16, sourceRect.left() + sourceRect.width() - 1);
- int vv = qBound(sourceRect.top(), v >> 16, sourceRect.top() + sourceRect.height() - 1);
- blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + vv * sbpl)[uu]);
- u += dudx;
- v += dvdx;
- ++line;
- --i;
- }
- }
- x_l += dx_l;
- x_r += dx_r;
- }
-}
-
-template <class SrcT, class DestT, class Blender>
-void qt_transform_image(DestT *destPixels, int dbpl,
- const SrcT *srcPixels, int sbpl,
- const QRectF &targetRect,
- const QRectF &sourceRect,
- const QRect &clip,
- const QTransform &targetRectTransform,
- Blender blender)
-{
- enum Corner
- {
- TopLeft,
- TopRight,
- BottomRight,
- BottomLeft
- };
-
- // map source rectangle to destination.
- QTransformImageVertex v[4];
- v[TopLeft].u = v[BottomLeft].u = sourceRect.left();
- v[TopLeft].v = v[TopRight].v = sourceRect.top();
- v[TopRight].u = v[BottomRight].u = sourceRect.right();
- v[BottomLeft].v = v[BottomRight].v = sourceRect.bottom();
- targetRectTransform.map(targetRect.left(), targetRect.top(), &v[TopLeft].x, &v[TopLeft].y);
- targetRectTransform.map(targetRect.right(), targetRect.top(), &v[TopRight].x, &v[TopRight].y);
- targetRectTransform.map(targetRect.left(), targetRect.bottom(), &v[BottomLeft].x, &v[BottomLeft].y);
- targetRectTransform.map(targetRect.right(), targetRect.bottom(), &v[BottomRight].x, &v[BottomRight].y);
-
- // find topmost vertex.
- int topmost = 0;
- for (int i = 1; i < 4; ++i) {
- if (v[i].y < v[topmost].y)
- topmost = i;
- }
- // rearrange array such that topmost vertex is at index 0.
- switch (topmost) {
- case 1:
- {
- QTransformImageVertex t = v[0];
- for (int i = 0; i < 3; ++i)
- v[i] = v[i+1];
- v[3] = t;
- }
- break;
- case 2:
- qSwap(v[0], v[2]);
- qSwap(v[1], v[3]);
- break;
- case 3:
- {
- QTransformImageVertex t = v[3];
- for (int i = 3; i > 0; --i)
- v[i] = v[i-1];
- v[0] = t;
- }
- break;
- }
-
- // if necessary, swap vertex 1 and 3 such that 1 is to the left of 3.
- qreal dx1 = v[1].x - v[0].x;
- qreal dy1 = v[1].y - v[0].y;
- qreal dx2 = v[3].x - v[0].x;
- qreal dy2 = v[3].y - v[0].y;
- if (dx1 * dy2 - dx2 * dy1 > 0)
- qSwap(v[1], v[3]);
-
- QTransformImageVertex u = {v[1].x - v[0].x, v[1].y - v[0].y, v[1].u - v[0].u, v[1].v - v[0].v};
- QTransformImageVertex w = {v[2].x - v[0].x, v[2].y - v[0].y, v[2].u - v[0].u, v[2].v - v[0].v};
-
- qreal det = u.x * w.y - u.y * w.x;
- if (det == 0)
- return;
-
- qreal invDet = 1.0 / det;
- qreal m11, m12, m21, m22, mdx, mdy;
-
- m11 = (u.u * w.y - u.y * w.u) * invDet;
- m12 = (u.x * w.u - u.u * w.x) * invDet;
- m21 = (u.v * w.y - u.y * w.v) * invDet;
- m22 = (u.x * w.v - u.v * w.x) * invDet;
- mdx = v[0].u - m11 * v[0].x - m12 * v[0].y;
- mdy = v[0].v - m21 * v[0].x - m22 * v[0].y;
-
- int dudx = int(m11 * 0x10000);
- int dvdx = int(m21 * 0x10000);
- int dudy = int(m12 * 0x10000);
- int dvdy = int(m22 * 0x10000);
- int u0 = qCeil((0.5 * m11 + 0.5 * m12 + mdx) * 0x10000) - 1;
- int v0 = qCeil((0.5 * m21 + 0.5 * m22 + mdy) * 0x10000) - 1;
-
- int x1 = qFloor(sourceRect.left());
- int y1 = qFloor(sourceRect.top());
- int x2 = qCeil(sourceRect.right());
- int y2 = qCeil(sourceRect.bottom());
- QRect sourceRectI(x1, y1, x2 - x1, y2 - y1);
-
- // rasterize trapezoids.
- if (v[1].y < v[3].y) {
- qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[0], v[1], v[0], v[3], sourceRectI, clip, v[0].y, v[1].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
- qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[1], v[2], v[0], v[3], sourceRectI, clip, v[1].y, v[3].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
- qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[1], v[2], v[3], v[2], sourceRectI, clip, v[3].y, v[2].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
- } else {
- qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[0], v[1], v[0], v[3], sourceRectI, clip, v[0].y, v[3].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
- qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[0], v[1], v[3], v[2], sourceRectI, clip, v[3].y, v[1].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
- qt_transform_image_rasterize(destPixels, dbpl, srcPixels, sbpl, v[1], v[2], v[3], v[2], sourceRectI, clip, v[1].y, v[2].y, dudx, dvdx, dudy, dvdy, u0, v0, blender);
- }
-}
-
void qt_transform_image_rgb16_on_rgb16(uchar *destPixels, int dbpl,
const uchar *srcPixels, int sbpl,
const QRectF &targetRect,