Changeset 846 for trunk/src/gui/painting/qblendfunctions.cpp
- Timestamp:
- May 5, 2011, 5:36:53 AM (14 years ago)
- Location:
- trunk
- Files:
-
- 2 edited
-
. (modified) (1 prop)
-
src/gui/painting/qblendfunctions.cpp (modified) (15 diffs)
Legend:
- Unmodified
- Added
- Removed
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trunk
- Property svn:mergeinfo changed
/branches/vendor/nokia/qt/4.7.2 (added) merged: 845 /branches/vendor/nokia/qt/current merged: 844 /branches/vendor/nokia/qt/4.6.3 removed
- Property svn:mergeinfo changed
-
trunk/src/gui/painting/qblendfunctions.cpp
r651 r846 1 1 /**************************************************************************** 2 2 ** 3 ** Copyright (C) 201 0Nokia Corporation and/or its subsidiary(-ies).3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). 4 4 ** All rights reserved. 5 5 ** Contact: Nokia Corporation (qt-info@nokia.com) … … 41 41 42 42 #include <qmath.h> 43 #include "q drawhelper_p.h"43 #include "qblendfunctions_p.h" 44 44 45 45 QT_BEGIN_NAMESPACE … … 89 89 struct Blend_RGB16_on_RGB16_NoAlpha { 90 90 inline void write(quint16 *dst, quint16 src) { *dst = src; } 91 92 inline void flush(void *) {} 91 93 }; 92 94 … … 100 102 *dst = BYTE_MUL_RGB16(src, m_alpha) + BYTE_MUL_RGB16(*dst, m_ialpha); 101 103 } 104 105 inline void flush(void *) {} 102 106 103 107 quint32 m_alpha; … … 115 119 } 116 120 } 121 122 inline void flush(void *) {} 117 123 }; 118 124 … … 133 139 } 134 140 141 inline void flush(void *) {} 142 135 143 quint32 m_alpha; 136 144 }; … … 146 154 } 147 155 } 156 157 inline void flush(void *) {} 148 158 }; 149 159 … … 164 174 } 165 175 176 inline void flush(void *) {} 177 166 178 quint32 m_alpha; 167 179 }; 168 169 template <typename SRC, typename T>170 void qt_scale_image_16bit(uchar *destPixels, int dbpl,171 const uchar *srcPixels, int sbpl,172 const QRectF &targetRect,173 const QRectF &srcRect,174 const QRect &clip,175 T blender)176 {177 qreal sx = targetRect.width() / (qreal) srcRect.width();178 qreal sy = targetRect.height() / (qreal) srcRect.height();179 180 int ix = 0x00010000 / sx;181 int iy = 0x00010000 / sy;182 183 // qDebug() << "scale:" << endl184 // << " - target" << targetRect << endl185 // << " - source" << srcRect << endl186 // << " - clip" << clip << endl187 // << " - sx=" << sx << " sy=" << sy << " ix=" << ix << " iy=" << iy;188 189 int cx1 = clip.x();190 int cx2 = clip.x() + clip.width();191 int cy1 = clip.top();192 int cy2 = clip.y() + clip.height();193 194 int tx1 = qRound(targetRect.left());195 int tx2 = qRound(targetRect.right());196 int ty1 = qRound(targetRect.top());197 int ty2 = qRound(targetRect.bottom());198 199 if (tx2 < tx1)200 qSwap(tx2, tx1);201 202 if (ty2 < ty1)203 qSwap(ty2, ty1);204 205 if (tx1 < cx1)206 tx1 = cx1;207 208 if (tx2 >= cx2)209 tx2 = cx2;210 211 if (tx1 >= tx2)212 return;213 214 if (ty1 < cy1)215 ty1 = cy1;216 217 if (ty2 >= cy2)218 ty2 = cy2;219 220 if (ty1 >= ty2)221 return;222 223 int h = ty2 - ty1;224 int w = tx2 - tx1;225 226 227 quint32 basex;228 quint32 srcy;229 230 if (sx < 0) {231 int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;232 basex = quint32(srcRect.right() * 65536) + dstx;233 } else {234 int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;235 basex = quint32(srcRect.left() * 65536) + dstx;236 }237 if (sy < 0) {238 int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;239 srcy = quint32(srcRect.bottom() * 65536) + dsty;240 } else {241 int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;242 srcy = quint32(srcRect.top() * 65536) + dsty;243 }244 245 quint16 *dst = ((quint16 *) (destPixels + ty1 * dbpl)) + tx1;246 247 while (h--) {248 const SRC *src = (const SRC *) (srcPixels + (srcy >> 16) * sbpl);249 int srcx = basex;250 for (int x=0; x<w; ++x) {251 blender.write(&dst[x], src[srcx >> 16]);252 srcx += ix;253 }254 dst = (quint16 *)(((uchar *) dst) + dbpl);255 srcy += iy;256 }257 }258 180 259 181 void qt_scale_image_rgb16_on_rgb16(uchar *destPixels, int dbpl, … … 333 255 } 334 256 335 staticvoid qt_blend_rgb16_on_rgb16(uchar *dst, int dbpl,336 337 338 257 void qt_blend_rgb16_on_rgb16(uchar *dst, int dbpl, 258 const uchar *src, int sbpl, 259 int w, int h, 260 int const_alpha) 339 261 { 340 262 #ifdef QT_DEBUG_DRAW … … 448 370 449 371 450 staticvoid qt_blend_argb32_on_rgb16_const_alpha(uchar *destPixels, int dbpl,451 452 453 372 void qt_blend_argb32_on_rgb16_const_alpha(uchar *destPixels, int dbpl, 373 const uchar *srcPixels, int sbpl, 374 int w, int h, 375 int const_alpha) 454 376 { 455 377 quint16 *dst = (quint16 *) destPixels; … … 644 566 struct Blend_RGB32_on_RGB32_NoAlpha { 645 567 inline void write(quint32 *dst, quint32 src) { *dst = src; } 568 569 inline void flush(void *) {} 646 570 }; 647 571 … … 656 580 } 657 581 582 inline void flush(void *) {} 583 658 584 quint32 m_alpha; 659 585 quint32 m_ialpha; … … 664 590 *dst = src + BYTE_MUL(*dst, qAlpha(~src)); 665 591 } 592 593 inline void flush(void *) {} 666 594 }; 667 595 … … 677 605 } 678 606 607 inline void flush(void *) {} 608 679 609 quint32 m_alpha; 680 610 quint32 m_ialpha; 681 611 }; 682 683 template <typename T> void qt_scale_image_32bit(uchar *destPixels, int dbpl,684 const uchar *srcPixels, int sbpl,685 const QRectF &targetRect,686 const QRectF &srcRect,687 const QRect &clip,688 T blender)689 {690 qreal sx = targetRect.width() / (qreal) srcRect.width();691 qreal sy = targetRect.height() / (qreal) srcRect.height();692 693 int ix = 0x00010000 / sx;694 int iy = 0x00010000 / sy;695 696 // qDebug() << "scale:" << endl697 // << " - target" << targetRect << endl698 // << " - source" << srcRect << endl699 // << " - clip" << clip << endl700 // << " - sx=" << sx << " sy=" << sy << " ix=" << ix << " iy=" << iy;701 702 int cx1 = clip.x();703 int cx2 = clip.x() + clip.width();704 int cy1 = clip.top();705 int cy2 = clip.y() + clip.height();706 707 int tx1 = qRound(targetRect.left());708 int tx2 = qRound(targetRect.right());709 int ty1 = qRound(targetRect.top());710 int ty2 = qRound(targetRect.bottom());711 712 if (tx2 < tx1)713 qSwap(tx2, tx1);714 715 if (ty2 < ty1)716 qSwap(ty2, ty1);717 718 if (tx1 < cx1)719 tx1 = cx1;720 721 if (tx2 >= cx2)722 tx2 = cx2;723 724 if (tx1 >= tx2)725 return;726 727 if (ty1 < cy1)728 ty1 = cy1;729 730 if (ty2 >= cy2)731 ty2 = cy2;732 733 if (ty1 >= ty2)734 return;735 736 int h = ty2 - ty1;737 int w = tx2 - tx1;738 739 quint32 basex;740 quint32 srcy;741 742 if (sx < 0) {743 int dstx = qFloor((tx1 + qreal(0.5) - targetRect.right()) * ix) + 1;744 basex = quint32(srcRect.right() * 65536) + dstx;745 } else {746 int dstx = qCeil((tx1 + qreal(0.5) - targetRect.left()) * ix) - 1;747 basex = quint32(srcRect.left() * 65536) + dstx;748 }749 if (sy < 0) {750 int dsty = qFloor((ty1 + qreal(0.5) - targetRect.bottom()) * iy) + 1;751 srcy = quint32(srcRect.bottom() * 65536) + dsty;752 } else {753 int dsty = qCeil((ty1 + qreal(0.5) - targetRect.top()) * iy) - 1;754 srcy = quint32(srcRect.top() * 65536) + dsty;755 }756 757 quint32 *dst = ((quint32 *) (destPixels + ty1 * dbpl)) + tx1;758 759 while (h--) {760 const uint *src = (const quint32 *) (srcPixels + (srcy >> 16) * sbpl);761 int srcx = basex;762 for (int x=0; x<w; ++x) {763 blender.write(&dst[x], src[srcx >> 16]);764 srcx += ix;765 }766 dst = (quint32 *)(((uchar *) dst) + dbpl);767 srcy += iy;768 }769 }770 612 771 613 void qt_scale_image_rgb32_on_rgb32(uchar *destPixels, int dbpl, … … 819 661 } 820 662 821 struct QTransformImageVertex822 {823 qreal x, y, u, v; // destination coordinates (x, y) and source coordinates (u, v)824 };825 826 template <class SrcT, class DestT, class Blender>827 void qt_transform_image_rasterize(DestT *destPixels, int dbpl,828 const SrcT *srcPixels, int sbpl,829 const QTransformImageVertex &topLeft, const QTransformImageVertex &bottomLeft,830 const QTransformImageVertex &topRight, const QTransformImageVertex &bottomRight,831 const QRect &sourceRect,832 const QRect &clip,833 qreal topY, qreal bottomY,834 int dudx, int dvdx, int dudy, int dvdy, int u0, int v0,835 Blender blender)836 {837 int fromY = qMax(qRound(topY), clip.top());838 int toY = qMin(qRound(bottomY), clip.top() + clip.height());839 if (fromY >= toY)840 return;841 842 qreal leftSlope = (bottomLeft.x - topLeft.x) / (bottomLeft.y - topLeft.y);843 qreal rightSlope = (bottomRight.x - topRight.x) / (bottomRight.y - topRight.y);844 int dx_l = int(leftSlope * 0x10000);845 int dx_r = int(rightSlope * 0x10000);846 int x_l = int((topLeft.x + (0.5 + fromY - topLeft.y) * leftSlope + 0.5) * 0x10000);847 int x_r = int((topRight.x + (0.5 + fromY - topRight.y) * rightSlope + 0.5) * 0x10000);848 849 int fromX, toX, x1, x2, u, v, i, ii;850 DestT *line;851 for (int y = fromY; y < toY; ++y) {852 line = reinterpret_cast<DestT *>(reinterpret_cast<uchar *>(destPixels) + y * dbpl);853 854 fromX = qMax(x_l >> 16, clip.left());855 toX = qMin(x_r >> 16, clip.left() + clip.width());856 if (fromX < toX) {857 // Because of rounding, we can get source coordinates outside the source image.858 // Clamp these coordinates to the source rect to avoid segmentation fault and859 // garbage on the screen.860 861 // Find the first pixel on the current scan line where the source coordinates are within the source rect.862 x1 = fromX;863 u = x1 * dudx + y * dudy + u0;864 v = x1 * dvdx + y * dvdy + v0;865 for (; x1 < toX; ++x1) {866 int uu = u >> 16;867 int vv = v >> 16;868 if (uu >= sourceRect.left() && uu < sourceRect.left() + sourceRect.width()869 && vv >= sourceRect.top() && vv < sourceRect.top() + sourceRect.height()) {870 break;871 }872 u += dudx;873 v += dvdx;874 }875 876 // Find the last pixel on the current scan line where the source coordinates are within the source rect.877 x2 = toX;878 u = (x2 - 1) * dudx + y * dudy + u0;879 v = (x2 - 1) * dvdx + y * dvdy + v0;880 for (; x2 > x1; --x2) {881 int uu = u >> 16;882 int vv = v >> 16;883 if (uu >= sourceRect.left() && uu < sourceRect.left() + sourceRect.width()884 && vv >= sourceRect.top() && vv < sourceRect.top() + sourceRect.height()) {885 break;886 }887 u -= dudx;888 v -= dvdx;889 }890 891 // Set up values at the beginning of the scan line.892 u = fromX * dudx + y * dudy + u0;893 v = fromX * dvdx + y * dvdy + v0;894 line += fromX;895 896 // Beginning of the scan line, with per-pixel checks.897 i = x1 - fromX;898 while (i) {899 int uu = qBound(sourceRect.left(), u >> 16, sourceRect.left() + sourceRect.width() - 1);900 int vv = qBound(sourceRect.top(), v >> 16, sourceRect.top() + sourceRect.height() - 1);901 blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + vv * sbpl)[uu]);902 u += dudx;903 v += dvdx;904 ++line;905 --i;906 }907 908 // Middle of the scan line, without checks.909 // Manual loop unrolling.910 i = x2 - x1;911 ii = i >> 3;912 while (ii) {913 blender.write(&line[0], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;914 blender.write(&line[1], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;915 blender.write(&line[2], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;916 blender.write(&line[3], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;917 blender.write(&line[4], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;918 blender.write(&line[5], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;919 blender.write(&line[6], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;920 blender.write(&line[7], reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx;921 line += 8;922 --ii;923 }924 switch (i & 7) {925 case 7: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;926 case 6: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;927 case 5: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;928 case 4: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;929 case 3: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;930 case 2: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;931 case 1: blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + (v >> 16) * sbpl)[u >> 16]); u += dudx; v += dvdx; ++line;932 }933 934 // End of the scan line, with per-pixel checks.935 i = toX - x2;936 while (i) {937 int uu = qBound(sourceRect.left(), u >> 16, sourceRect.left() + sourceRect.width() - 1);938 int vv = qBound(sourceRect.top(), v >> 16, sourceRect.top() + sourceRect.height() - 1);939 blender.write(line, reinterpret_cast<const SrcT *>(reinterpret_cast<const uchar *>(srcPixels) + vv * sbpl)[uu]);940 u += dudx;941 v += dvdx;942 ++line;943 --i;944 }945 }946 x_l += dx_l;947 x_r += dx_r;948 }949 }950 951 template <class SrcT, class DestT, class Blender>952 void qt_transform_image(DestT *destPixels, int dbpl,953 const SrcT *srcPixels, int sbpl,954 const QRectF &targetRect,955 const QRectF &sourceRect,956 const QRect &clip,957 const QTransform &targetRectTransform,958 Blender blender)959 {960 enum Corner961 {962 TopLeft,963 TopRight,964 BottomRight,965 BottomLeft966 };967 968 // map source rectangle to destination.969 QTransformImageVertex v[4];970 v[TopLeft].u = v[BottomLeft].u = sourceRect.left();971 v[TopLeft].v = v[TopRight].v = sourceRect.top();972 v[TopRight].u = v[BottomRight].u = sourceRect.right();973 v[BottomLeft].v = v[BottomRight].v = sourceRect.bottom();974 targetRectTransform.map(targetRect.left(), targetRect.top(), &v[TopLeft].x, &v[TopLeft].y);975 targetRectTransform.map(targetRect.right(), targetRect.top(), &v[TopRight].x, &v[TopRight].y);976 targetRectTransform.map(targetRect.left(), targetRect.bottom(), &v[BottomLeft].x, &v[BottomLeft].y);977 targetRectTransform.map(targetRect.right(), targetRect.bottom(), &v[BottomRight].x, &v[BottomRight].y);978 979 // find topmost vertex.980 int topmost = 0;981 for (int i = 1; i < 4; ++i) {982 if (v[i].y < v[topmost].y)983 topmost = i;984 }985 // rearrange array such that topmost vertex is at index 0.986 switch (topmost) {987 case 1:988 {989 QTransformImageVertex t = v[0];990 for (int i = 0; i < 3; ++i)991 v[i] = v[i+1];992 v[3] = t;993 }994 break;995 case 2:996 qSwap(v[0], v[2]);997 qSwap(v[1], v[3]);998 break;999 case 3:1000 {1001 QTransformImageVertex t = v[3];1002 for (int i = 3; i > 0; --i)1003 v[i] = v[i-1];1004 v[0] = t;1005 }1006 break;1007 }1008 1009 // if necessary, swap vertex 1 and 3 such that 1 is to the left of 3.1010 qreal dx1 = v[1].x - v[0].x;1011 qreal dy1 = v[1].y - v[0].y;1012 qreal dx2 = v[3].x - v[0].x;1013 qreal dy2 = v[3].y - v[0].y;1014 if (dx1 * dy2 - dx2 * dy1 > 0)1015 qSwap(v[1], v[3]);1016 1017 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};1018 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};1019 1020 qreal det = u.x * w.y - u.y * w.x;1021 if (det == 0)1022 return;1023 1024 qreal invDet = 1.0 / det;1025 qreal m11, m12, m21, m22, mdx, mdy;1026 1027 m11 = (u.u * w.y - u.y * w.u) * invDet;1028 m12 = (u.x * w.u - u.u * w.x) * invDet;1029 m21 = (u.v * w.y - u.y * w.v) * invDet;1030 m22 = (u.x * w.v - u.v * w.x) * invDet;1031 mdx = v[0].u - m11 * v[0].x - m12 * v[0].y;1032 mdy = v[0].v - m21 * v[0].x - m22 * v[0].y;1033 1034 int dudx = int(m11 * 0x10000);1035 int dvdx = int(m21 * 0x10000);1036 int dudy = int(m12 * 0x10000);1037 int dvdy = int(m22 * 0x10000);1038 int u0 = qCeil((0.5 * m11 + 0.5 * m12 + mdx) * 0x10000) - 1;1039 int v0 = qCeil((0.5 * m21 + 0.5 * m22 + mdy) * 0x10000) - 1;1040 1041 int x1 = qFloor(sourceRect.left());1042 int y1 = qFloor(sourceRect.top());1043 int x2 = qCeil(sourceRect.right());1044 int y2 = qCeil(sourceRect.bottom());1045 QRect sourceRectI(x1, y1, x2 - x1, y2 - y1);1046 1047 // rasterize trapezoids.1048 if (v[1].y < v[3].y) {1049 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);1050 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);1051 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);1052 } else {1053 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);1054 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);1055 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);1056 }1057 }1058 1059 663 void qt_transform_image_rgb16_on_rgb16(uchar *destPixels, int dbpl, 1060 664 const uchar *srcPixels, int sbpl,
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