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101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
#include "Painter.h"
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#include "FrameBufferSDL.h"
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#include "Widget.h"
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#include <AK/Assertions.h>
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#include <SDL.h>
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#if 0
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#include "Peanut8x8.h"
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#define FONT_NAMESPACE Peanut8x8
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#else
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#include "Peanut8x10.h"
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#define FONT_NAMESPACE Peanut8x10
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#endif
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Painter::Painter(Widget& widget)
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: m_widget(widget)
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{
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}
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Painter::~Painter()
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{
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int rc = SDL_UpdateWindowSurface(FrameBufferSDL::the().window());
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ASSERT(rc == 0);
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}
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static dword* scanline(int y)
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{
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auto& surface = *FrameBufferSDL::the().surface();
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return (dword*)(((byte*)surface.pixels) + (y * surface.pitch));
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}
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void Painter::fillRect(const Rect& rect, Color color)
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{
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Rect r = rect;
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r.moveBy(m_widget.x(), m_widget.y());
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for (int y = r.top(); y < r.bottom(); ++y) {
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dword* bits = scanline(y);
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for (int x = r.left(); x < r.right(); ++x) {
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bits[x] = color.value();
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}
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}
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}
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void Painter::drawRect(const Rect& rect, Color color)
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{
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Rect r = rect;
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r.moveBy(m_widget.x(), m_widget.y());
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for (int y = r.top(); y < r.bottom(); ++y) {
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dword* bits = scanline(y);
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if (y == r.top() || y == (r.bottom() - 1)) {
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for (int x = r.left(); x < r.right(); ++x) {
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bits[x] = color.value();
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}
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} else {
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bits[r.left()] = color.value();
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bits[r.right() - 1] = color.value();
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}
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}
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}
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void Painter::drawText(const Rect& rect, const String& text, TextAlignment alignment, const Color& color)
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{
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Point point;
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if (alignment == TextAlignment::TopLeft) {
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point = rect.location();
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point.moveBy(m_widget.x(), m_widget.y());;
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} else if (alignment == TextAlignment::Center) {
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int textWidth = text.length() * FONT_NAMESPACE::fontWidth;
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point = rect.center();
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point.moveBy(-(textWidth / 2), -(FONT_NAMESPACE::fontWidth / 2));
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point.moveBy(m_widget.x(), m_widget.y());
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} else {
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ASSERT_NOT_REACHED();
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}
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for (int row = 0; row < FONT_NAMESPACE::fontHeight; ++row) {
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int y = point.y() + row;
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dword* bits = scanline(y);
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for (unsigned i = 0; i < text.length(); ++i) {
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byte ch = text[i];
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if (ch == ' ')
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continue;
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if (ch < FONT_NAMESPACE::firstCharacter || ch > FONT_NAMESPACE::lastCharacter) {
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printf("Font doesn't have 0x%02x ('%c')\n", ch, ch);
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ASSERT_NOT_REACHED();
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}
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const char* fontCharacter = FONT_NAMESPACE::font[ch - FONT_NAMESPACE::firstCharacter];
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int x = point.x() + i * FONT_NAMESPACE::fontWidth;
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for (unsigned j = 0; j < FONT_NAMESPACE::fontWidth; ++j) {
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char fc = fontCharacter[row * FONT_NAMESPACE::fontWidth + j];
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if (fc == '#')
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bits[x + j] = color.value();
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}
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}
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}
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}
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