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LibWeb: Add CanvasRenderingContext2D.drawImage(image, x, y)

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This function allows you to draw a loaded <img> element into a canvas.
This commit is contained in:
Andreas Kling 2020-04-14 20:38:44 +02:00
parent 370befbf52
commit 067ea5a2e0
4 changed files with 47 additions and 0 deletions
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17
Libraries/LibWeb/DOM/CanvasRenderingContext2D.cpp
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@ -28,6 +28,7 @@
#include <LibGfx/Painter.h>
#include <LibWeb/DOM/CanvasRenderingContext2D.h>
#include <LibWeb/DOM/HTMLCanvasElement.h>
#include <LibWeb/DOM/HTMLImageElement.h>
namespace Web {
@ -82,6 +83,22 @@ void CanvasRenderingContext2D::stroke_rect(float x, float y, float width, float
did_draw(rect);
}
void CanvasRenderingContext2D::draw_image(const HTMLImageElement& image_element, float x, float y)
{
if (!image_element.bitmap())
return;
auto painter = this->painter();
if (!painter)
return;
auto src_rect = image_element.bitmap()->rect();
Gfx::FloatRect dst_rect = { x, y, (float)image_element.bitmap()->width(), (float)image_element.bitmap()->height() };
auto rect = m_transform.map(dst_rect);
painter->draw_scaled_bitmap(enclosing_int_rect(rect), *image_element.bitmap(), src_rect);
}
void CanvasRenderingContext2D::scale(float sx, float sy)
{
dbg() << "CanvasRenderingContext2D::scale(): " << sx << ", " << sy;