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Make cursors and select tools visible without special blend modes

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This commit is contained in:
Yousef Khadadeh 2026-04-15 20:58:25 +03:00
parent bd4d662dd9
commit c85fb11636
8 changed files with 39 additions and 48 deletions
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29
src/DrawingProgram/DrawingProgram.cpp
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@ -575,20 +575,27 @@ bool DrawingProgram::prevent_undo_or_redo() {
return drawTool->prevent_undo_or_redo();
}
SkPaint DrawingProgram::select_tool_line_paint(const DrawData& drawData) {
SkScalar intervals[] = {10, 5};
std::pair<SkPaint, SkPaint> DrawingProgram::select_tool_line_paint(const DrawData& drawData) {
SkScalar intervals[] = {10, 10};
SkScalar intervalSum = intervals[0] + intervals[1];
float timeSinceEpoch = std::chrono::duration_cast<std::chrono::duration<float>>(std::chrono::steady_clock::now().time_since_epoch()).count();
sk_sp<SkPathEffect> lassoLineDashEffect = SkDashPathEffect::Make({intervals, 2}, -std::fmod(timeSinceEpoch * 50, 15));
sk_sp<SkPathEffect> lassoLineDashEffect1 = SkDashPathEffect::Make({intervals, 2}, -std::fmod(timeSinceEpoch * 10, intervalSum));
sk_sp<SkPathEffect> lassoLineDashEffect2 = SkDashPathEffect::Make({intervals, 2}, -std::fmod(timeSinceEpoch * 10, intervalSum) + 10);
SkPaint selectLinePaint;
selectLinePaint.setStyle(SkPaint::kStroke_Style);
selectLinePaint.setStrokeWidth(3);
selectLinePaint.setColor4f(world.canvasTheme.get_tool_front_color());
selectLinePaint.setPathEffect(lassoLineDashEffect);
selectLinePaint.setBlender(CanvasTheme::get_visible_blend_mode());
selectLinePaint.setAntiAlias(drawData.skiaAA);
std::pair<SkPaint, SkPaint> selectLinePaintPair;
selectLinePaintPair.first.setStyle(SkPaint::kStroke_Style);
selectLinePaintPair.first.setStrokeWidth(3);
selectLinePaintPair.first.setColor4f(SkColor4f{1.0f, 1.0f, 1.0f, 1.0f});
selectLinePaintPair.first.setPathEffect(lassoLineDashEffect1);
selectLinePaintPair.first.setAntiAlias(drawData.skiaAA);
return selectLinePaint;
selectLinePaintPair.second.setStyle(SkPaint::kStroke_Style);
selectLinePaintPair.second.setStrokeWidth(3);
selectLinePaintPair.second.setColor4f(SkColor4f{0.0f, 0.0f, 0.0f, 1.0f});
selectLinePaintPair.second.setPathEffect(lassoLineDashEffect2);
selectLinePaintPair.second.setAntiAlias(drawData.skiaAA);
return selectLinePaintPair;
}
void DrawingProgram::rebuild_cache() {

2
src/DrawingProgram/DrawingProgram.hpp
View file

@ -89,7 +89,7 @@ class DrawingProgram {
float drag_point_radius();
void draw_drag_circle(SkCanvas* canvas, const Vector2f& pos, const SkColor4f& c, const DrawData& drawData, float radiusMultiplier = 1.0f);
SkPaint select_tool_line_paint(const DrawData& drawData);
std::pair<SkPaint, SkPaint> select_tool_line_paint(const DrawData& drawData);
bool is_actual_selection_tool(DrawingProgramToolType typeToCheck);
bool is_selection_allowing_tool(DrawingProgramToolType typeToCheck);

4
src/DrawingProgram/Tools/BrushTool.cpp
View file

@ -208,9 +208,11 @@ void BrushTool::draw(SkCanvas* canvas, const DrawData& drawData) {
linePaint.setStyle(SkPaint::kStroke_Style);
linePaint.setStrokeCap(SkPaint::kRound_Cap);
linePaint.setStrokeWidth(0.0f);
linePaint.setBlender(CanvasTheme::get_visible_blend_mode());
SkPath circ = SkPath::Circle(pos.x(), pos.y(), width);
canvas->drawPath(circ, linePaint);
linePaint.setColor4f({0.0f, 0.0f, 0.0f, 1.0f});
circ = SkPath::Circle(pos.x(), pos.y(), width - 1.0f);
canvas->drawPath(circ, linePaint);
}
}
}

13
src/DrawingProgram/Tools/EraserTool.cpp
View file

@ -125,15 +125,20 @@ void EraserTool::draw(SkCanvas* canvas, const DrawData& drawData) {
float width = relativeWidthResult.first.value() * 0.5f;
SkPaint linePaint;
linePaint.setAntiAlias(drawData.skiaAA);
linePaint.setColor4f({1.0f, 1.0f, 1.0f, 0.5f});
linePaint.setColor4f({0.0f, 0.0f, 0.0f, 0.4f});
linePaint.setStyle(SkPaint::kStroke_Style);
linePaint.setStrokeCap(SkPaint::kRound_Cap);
linePaint.setStrokeWidth(width * 2.0f);
linePaint.setBlender(CanvasTheme::get_visible_blend_mode());
linePaint.setStrokeWidth(width * 2.0f + 1.0f);
SkPathBuilder erasePath;
erasePath.moveTo(convert_vec2<SkPoint>(lastPos));
erasePath.lineTo(convert_vec2<SkPoint>(drawData.main->input.mouse.pos));
canvas->drawPath(erasePath.detach(), linePaint);
SkPath erasePathDetach = erasePath.detach();
canvas->drawPath(erasePathDetach, linePaint);
linePaint.setStrokeWidth(width * 2.0f);
linePaint.setColor4f({1.0f, 1.0f, 1.0f, 0.4f});
canvas->drawPath(erasePathDetach, linePaint);
}
lastPos = drawData.main->input.mouse.pos;

5
src/DrawingProgram/Tools/LassoSelectTool.cpp
View file

@ -138,7 +138,10 @@ void LassoSelectTool::draw(SkCanvas* canvas, const DrawData& drawData) {
for(Vector2f& p : controls.lassoPoints | std::views::drop(1))
lassoPath.lineTo(convert_vec2<SkPoint>(p));
canvas->drawPath(lassoPath.detach(), drawP.select_tool_line_paint(drawData));
auto paintPair = drawP.select_tool_line_paint(drawData);
SkPath lassoPathDetach = lassoPath.detach();
canvas->drawPath(lassoPathDetach, paintPair.first);
canvas->drawPath(lassoPathDetach, paintPair.second);
canvas->restore();
}

5
src/DrawingProgram/Tools/RectSelectTool.cpp
View file

@ -100,7 +100,10 @@ void RectSelectTool::draw(SkCanvas* canvas, const DrawData& drawData) {
controls.coords.transform_sk_canvas(canvas, drawData);
SkRect r = SkRect::MakeLTRB(newT[0].x(), newT[0].y(), newT[2].x(), newT[2].y());
canvas->drawRect(r, drawP.select_tool_line_paint(drawData));
auto paintPair = drawP.select_tool_line_paint(drawData);
canvas->drawRect(r, paintPair.first);
canvas->drawRect(r, paintPair.second);
canvas->restore();
}