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Add a Painter::drawBitmap() and make Painter::drawText() use it.

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This commit is contained in:
Andreas Kling 2018-10-12 12:29:58 +02:00
parent 73895ce043
commit e23ac56017
Notes: sideshowbarker 2024-07-19 18:50:14 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/e23ac560174
4 changed files with 51 additions and 20 deletions
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Widgets/FrameBuffer.o
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47
Widgets/Painter.cpp
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@ -80,8 +80,24 @@ void Painter::xorRect(const Rect& rect, Color color)
}
}
void Painter::drawBitmap(const Point& point, const char* bitmap, const Size& bitmapSize, Color color)
{
ASSERT(bitmap);
ASSERT(!bitmapSize.isEmpty());
void Painter::drawText(const Rect& rect, const String& text, TextAlignment alignment, const Color& color)
for (int row = 0; row < bitmapSize.height(); ++row) {
int y = point.y() + row;
int x = point.x();
dword* bits = scanline(y);
for (int j = 0; j < bitmapSize.width(); ++j) {
char fc = bitmap[row * bitmapSize.width() + j];
if (fc == '#')
bits[x + j] = color.value();
}
}
}
void Painter::drawText(const Rect& rect, const String& text, TextAlignment alignment, Color color)
{
Point point;
@ -97,25 +113,18 @@ void Painter::drawText(const Rect& rect, const String& text, TextAlignment align
ASSERT_NOT_REACHED();
}
for (int row = 0; row < m_font.glyphHeight(); ++row) {
int y = point.y() + row;
dword* bits = scanline(y);
for (unsigned i = 0; i < text.length(); ++i) {
byte ch = text[i];
if (ch == ' ')
continue;
const char* glyph = m_font.glyph(ch);
if (!glyph) {
printf("Font doesn't have 0x%02x ('%c')\n", ch, ch);
ASSERT_NOT_REACHED();
}
int x = point.x() + i * m_font.glyphWidth();
for (int j = 0; j < m_font.glyphWidth(); ++j) {
char fc = glyph[row * m_font.glyphWidth() + j];
if (fc == '#')
bits[x + j] = color.value();
}
for (unsigned i = 0; i < text.length(); ++i) {
byte ch = text[i];
if (ch == ' ')
continue;
const char* glyph = m_font.glyph(ch);
if (!glyph) {
printf("Font doesn't have 0x%02x ('%c')\n", ch, ch);
ASSERT_NOT_REACHED();
}
int x = point.x() + i * m_font.glyphWidth();
int y = point.y();
drawBitmap({ x, y }, glyph, { m_font.glyphWidth(), m_font.glyphHeight() }, color);
}
}

4
Widgets/Painter.h
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@ -3,6 +3,7 @@
#include "Color.h"
#include "Point.h"
#include "Rect.h"
#include "Size.h"
#include <AK/String.h>
class Font;
@ -15,7 +16,8 @@ public:
~Painter();
void fillRect(const Rect&, Color);
void drawRect(const Rect&, Color);
void drawText(const Rect&, const String&, TextAlignment = TextAlignment::TopLeft, const Color& = Color());
void drawText(const Rect&, const String&, TextAlignment = TextAlignment::TopLeft, Color = Color());
void drawBitmap(const Point&, const char* bitmap, const Size& bitmapSize, Color = Color());
void xorRect(const Rect&, Color);

20
Widgets/Size.h Normal file
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@ -0,0 +1,20 @@
#pragma once
class Size {
public:
Size() { }
Size(int w, int h) : m_width(w), m_height(h) { }
bool isEmpty() const { return !m_width || !m_height; }
int width() const { return m_width; }
int height() const { return m_height; }
void setWidth(int w) { m_width = w; }
void setHeight(int h) { m_height = h; }
private:
int m_width { 0 };
int m_height { 0 };
};