mirror of
https://github.com/RGBCube/serenity
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1c0669f010
Instead of LibGUI and WindowServer building their own copies of the drawing and graphics code, let's it in a separate LibDraw library. This avoids building the code twice, and will encourage better separation of concerns. :^)
97 lines
3.5 KiB
C++
97 lines
3.5 KiB
C++
#pragma once
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#include "Color.h"
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#include "Point.h"
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#include "Rect.h"
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#include "Size.h"
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#include <AK/AKString.h>
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#include <LibDraw/TextAlignment.h>
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#include <LibDraw/TextElision.h>
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class CharacterBitmap;
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class GlyphBitmap;
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class GraphicsBitmap;
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class Font;
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class Painter {
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public:
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explicit Painter(GraphicsBitmap&);
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~Painter();
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void fill_rect(const Rect&, Color);
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void fill_rect_with_gradient(const Rect&, Color gradient_start, Color gradient_end);
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void draw_rect(const Rect&, Color, bool rough = false);
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void draw_bitmap(const Point&, const CharacterBitmap&, Color = Color());
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void draw_bitmap(const Point&, const GlyphBitmap&, Color = Color());
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void set_pixel(const Point&, Color);
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void draw_line(const Point&, const Point&, Color, int thickness = 1);
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void draw_scaled_bitmap(const Rect& dst_rect, const GraphicsBitmap&, const Rect& src_rect);
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void blit(const Point&, const GraphicsBitmap&, const Rect& src_rect, float opacity = 1.0f);
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void blit_dimmed(const Point&, const GraphicsBitmap&, const Rect& src_rect);
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void blit_tiled(const Point&, const GraphicsBitmap&, const Rect& src_rect);
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void blit_offset(const Point&, const GraphicsBitmap&, const Rect& src_rect, const Point&);
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void blit_scaled(const Rect&, const GraphicsBitmap&, const Rect&, float, float);
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void draw_text(const Rect&, const StringView&, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
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void draw_text(const Rect&, const StringView&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
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void draw_glyph(const Point&, char, Color);
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void draw_glyph(const Point&, char, const Font&, Color);
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const Font& font() const { return *state().font; }
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void set_font(const Font& font) { state().font = &font; }
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enum class DrawOp {
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Copy,
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Xor
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};
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void set_draw_op(DrawOp op) { state().draw_op = op; }
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DrawOp draw_op() const { return state().draw_op; }
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void add_clip_rect(const Rect& rect);
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void clear_clip_rect();
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Rect clip_rect() const { return state().clip_rect; }
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void translate(int dx, int dy) { state().translation.move_by(dx, dy); }
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void translate(const Point& delta) { state().translation.move_by(delta); }
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Point translation() const { return state().translation; }
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GraphicsBitmap* target() { return m_target.ptr(); }
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void save() { m_state_stack.append(m_state_stack.last()); }
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void restore()
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{
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ASSERT(m_state_stack.size() > 1);
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m_state_stack.take_last();
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}
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protected:
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void set_pixel_with_draw_op(u32& pixel, const Color&);
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void fill_rect_with_draw_op(const Rect&, Color);
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void blit_with_alpha(const Point&, const GraphicsBitmap&, const Rect& src_rect);
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void blit_with_opacity(const Point&, const GraphicsBitmap&, const Rect& src_rect, float opacity);
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void draw_pixel(const Point&, Color, int thickness = 1);
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void draw_text_line(const Rect&, const StringView&, const Font&, TextAlignment, Color, TextElision);
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struct State {
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const Font* font;
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Point translation;
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Rect clip_rect;
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DrawOp draw_op;
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};
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State& state() { return m_state_stack.last(); }
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const State& state() const { return m_state_stack.last(); }
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Rect m_clip_origin;
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NonnullRefPtr<GraphicsBitmap> m_target;
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Vector<State, 4> m_state_stack;
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};
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class PainterStateSaver {
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public:
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explicit PainterStateSaver(Painter&);
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~PainterStateSaver();
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private:
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Painter& m_painter;
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};
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