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authorleseb <leseb>2002-06-27 08:42:50 (UTC)
committer leseb <leseb>2002-06-27 08:42:50 (UTC)
commit596749dc52cc89b5325f9089b79d0b9cc8240682 (patch) (side-by-side diff)
tree7d400323444c6ea5c1bfb5d9c2f8dfb3a2a01435
parent4080b87bd8f9a76217ba8ae06f2a1b2ca9bcc285 (diff)
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Try to take AA into account when filling
Diffstat (more/less context) (show whitespace changes)
-rw-r--r--noncore/graphics/drawpad/filltool.cpp70
-rw-r--r--noncore/graphics/drawpad/filltool.h4
2 files changed, 74 insertions, 0 deletions
diff --git a/noncore/graphics/drawpad/filltool.cpp b/noncore/graphics/drawpad/filltool.cpp
index d323cc2..0177e1c 100644
--- a/noncore/graphics/drawpad/filltool.cpp
+++ b/noncore/graphics/drawpad/filltool.cpp
@@ -19,6 +19,8 @@
#include <qimage.h>
+const int FILL_THRESHOLD = 65536;
+
FillTool::FillTool(DrawPad* drawPad, DrawPadCanvas* drawPadCanvas)
: Tool(drawPad, drawPadCanvas)
{
@@ -38,7 +40,23 @@ void FillTool::mousePressEvent(QMouseEvent* e)
m_oldRgb = m_image.pixel(x, y);
if (m_oldRgb != m_fillRgb) {
+ if (m_pDrawPad->antiAliasing()) {
+ m_mask.create(m_image.width(), m_image.height(), 8, 2);
+ m_mask.fill(0);
+
+ fillMaskLine(x, y);
+
+ for (int i = 0; i < m_image.width(); i++) {
+ for (int j = 0; j < m_image.height(); j++) {
+ if (m_mask.pixelIndex(i, j) == 1) {
+ setInterpolatedPixel(i, j);
+ }
+ }
+ }
+
+ } else {
fillLine(x, y);
+ }
m_pDrawPadCanvas->currentPage()->convertFromImage(m_image);
m_pDrawPadCanvas->viewport()->update();
@@ -88,3 +106,55 @@ void FillTool::fillLine(int x, int y)
}
}
}
+
+void FillTool::fillMaskLine(int x, int y)
+{
+ if ((x >= 0) && (x < m_image.width()) && (y >= 0) && (y < m_image.height())) {
+ if (m_mask.pixelIndex(x, y) == 0) {
+ if (rgbDistance(m_image.pixel(x, y), m_oldRgb) < FILL_THRESHOLD) {
+ int x1, x2;
+
+ x1 = x - 1;
+ x2 = x + 1;
+
+ while ((x1 >= 0) && (rgbDistance(m_image.pixel(x1, y), m_oldRgb) < FILL_THRESHOLD)) {
+ x1--;
+ }
+
+ while ((x2 < m_image.width()) && (rgbDistance(m_image.pixel(x2, y), m_oldRgb) < FILL_THRESHOLD)) {
+ x2++;
+ }
+
+ for (int i = x1 + 1; i < x2; i++) {
+ m_mask.setPixel(i, y, 1);
+ }
+
+ for (int i = x1 + 1; i < x2; i++) {
+ fillMaskLine(i, y - 1);
+ }
+
+ for (int i = x1 + 1; i < x2; i++) {
+ fillMaskLine(i, y + 1);
+ }
+ }
+ }
+ }
+}
+
+void FillTool::setInterpolatedPixel(int x, int y)
+{
+ int fillRed = QMIN(QMAX(qRed(m_fillRgb) + qRed(m_image.pixel(x, y)) - qRed(m_oldRgb), 0), 255);
+ int fillGreen = QMIN(QMAX(qGreen(m_fillRgb) + qGreen(m_image.pixel(x, y)) - qGreen(m_oldRgb), 0), 255);
+ int fillBlue = QMIN(QMAX(qBlue(m_fillRgb) + qBlue(m_image.pixel(x, y)) - qBlue(m_oldRgb), 0), 255);
+
+ m_image.setPixel(x, y, qRgb(fillRed, fillGreen, fillBlue));
+}
+
+int FillTool::rgbDistance(QRgb rgb1, QRgb rgb2)
+{
+ int redDistance = qRed(rgb2) - qRed(rgb1);
+ int greenDistance = qGreen(rgb2) - qGreen(rgb1);
+ int blueDistance = qBlue(rgb2) - qBlue(rgb1);
+
+ return (redDistance * redDistance + greenDistance * greenDistance + blueDistance * blueDistance);
+}
diff --git a/noncore/graphics/drawpad/filltool.h b/noncore/graphics/drawpad/filltool.h
index eaf9a27..03ee489 100644
--- a/noncore/graphics/drawpad/filltool.h
+++ b/noncore/graphics/drawpad/filltool.h
@@ -30,8 +30,12 @@ public:
private:
void fillLine(int x, int y);
+ void fillMaskLine(int x, int y);
+ void setInterpolatedPixel(int x, int y);
+ int rgbDistance(QRgb rgb1, QRgb rgb2);
QImage m_image;
+ QImage m_mask;
QRgb m_fillRgb;
QRgb m_oldRgb;
};