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dcbddb4f8c
If we already know the bitmap format used, we can use these functions to bypass the format checks and go straight to pixel manipulation.
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
#include "BucketTool.h"
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#include "PaintableWidget.h"
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#include <AK/Queue.h>
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#include <AK/SinglyLinkedList.h>
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#include <LibGUI/GPainter.h>
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#include <SharedGraphics/GraphicsBitmap.h>
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#include <stdio.h>
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BucketTool::BucketTool()
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{
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}
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BucketTool::~BucketTool()
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{
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}
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static void flood_fill(GraphicsBitmap& bitmap, const Point& start_position, Color target_color, Color fill_color)
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{
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ASSERT(bitmap.format() == GraphicsBitmap::Format::RGB32);
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Queue<Point> queue;
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queue.enqueue(Point(start_position));
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while (!queue.is_empty()) {
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auto position = queue.dequeue();
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if (bitmap.get_pixel<GraphicsBitmap::Format::RGB32>(position.x(), position.y()) != target_color)
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continue;
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bitmap.set_pixel<GraphicsBitmap::Format::RGB32>(position.x(), position.y(), fill_color);
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if (position.x() != 0)
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queue.enqueue(position.translated(-1, 0));
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if (position.x() != bitmap.width() - 1)
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queue.enqueue(position.translated(1, 0));
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if (position.y() != 0)
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queue.enqueue(position.translated(0, -1));
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if (position.y() != bitmap.height() - 1)
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queue.enqueue(position.translated(0, 1));
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}
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}
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void BucketTool::on_mousedown(PaintableWidget& paintable_widget, GMouseEvent& event)
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{
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if (!paintable_widget.rect().contains(event.position()))
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return;
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GPainter painter(paintable_widget.bitmap());
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auto target_color = paintable_widget.bitmap().get_pixel(event.x(), event.y());
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flood_fill(paintable_widget.bitmap(), event.position(), target_color, paintable_widget.color_for(event));
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paintable_widget.update();
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}
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