89 lines
3.1 KiB
C++
89 lines
3.1 KiB
C++
#pragma once
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enum class BitmapTypes : uint8_t
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{
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None = 0,
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RawBitmap = 1,
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DibBitmap = 2,
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Spliced = 3,
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};
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struct ColorRgba
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{
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static constexpr ColorRgba Black() { return ColorRgba{ 0, 0, 0, 255 }; }
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static constexpr ColorRgba White() { return ColorRgba{ 255, 255, 255, 255 }; }
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static constexpr ColorRgba Red() { return ColorRgba{ 255, 0, 0, 255 }; }
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static constexpr ColorRgba Green() { return ColorRgba{ 0, 255,0, 255 }; }
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static constexpr ColorRgba Blue() { return ColorRgba{ 0, 0, 255, 255 }; }
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uint32_t Color;
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ColorRgba() = default;
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explicit constexpr ColorRgba(uint32_t color)
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: Color(color)
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{
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}
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explicit constexpr ColorRgba(uint8_t red, uint8_t green, uint8_t blue, uint8_t alpha)
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: Color(alpha << alphaOffset | red << redOffset | green << greenOffset | blue << blueOffset)
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{
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}
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uint8_t GetAlpha() const { return (Color >> alphaOffset) & 0xffu; }
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uint8_t GetRed() const { return (Color >> redOffset) & 0xffu; }
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uint8_t GetGreen() const { return (Color >> greenOffset) & 0xffu; }
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uint8_t GetBlue() const { return (Color >> blueOffset) & 0xffu; }
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void SetAlpha(uint8_t val) { Color = (Color & (~(0xffu << alphaOffset))) | (val << alphaOffset); }
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void SetRed(uint8_t val) { Color = (Color & (~(0xffu << redOffset))) | (val << redOffset); }
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void SetGreen(uint8_t val) { Color = (Color & (~(0xffu << greenOffset))) | (val << greenOffset); }
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void SetBlue(uint8_t val) { Color = (Color & (~(0xffu << blueOffset))) | (val << blueOffset); }
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private:
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static const unsigned alphaOffset = 3 * 8, redOffset = 2 * 8, greenOffset = 1 * 8, blueOffset = 0 * 8;
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};
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static_assert(sizeof(ColorRgba) == 4, "Wrong size of RGBA color");
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struct gdrv_bitmap8
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{
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gdrv_bitmap8(int width, int height);
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gdrv_bitmap8(int width, int height, bool indexed);
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gdrv_bitmap8(int width, int height, bool indexed, bool bmpBuff);
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gdrv_bitmap8(const struct dat8BitBmpHeader& header);
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~gdrv_bitmap8();
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void ScaleIndexed(float scaleX, float scaleY);
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void CreateTexture(const char* scaleHint, int access);
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void BlitToTexture();
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ColorRgba* BmpBufPtr1;
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char* IndexedBmpPtr;
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int Width;
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int Height;
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int Stride;
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int IndexedStride;
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BitmapTypes BitmapType;
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int XPosition;
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int YPosition;
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unsigned Resolution;
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SDL_Texture* Texture;
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};
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class gdrv
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{
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public:
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static int display_palette(ColorRgba* plt);
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static void fill_bitmap(gdrv_bitmap8* bmp, int width, int height, int xOff, int yOff, uint8_t fillChar);
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static void fill_bitmap(gdrv_bitmap8* bmp, int width, int height, int xOff, int yOff, ColorRgba fillColor);
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static void copy_bitmap(gdrv_bitmap8* dstBmp, int width, int height, int xOff, int yOff, gdrv_bitmap8* srcBmp,
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int srcXOff, int srcYOff);
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static void copy_bitmap_w_transparency(gdrv_bitmap8* dstBmp, int width, int height, int xOff, int yOff,
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gdrv_bitmap8* srcBmp, int srcXOff, int srcYOff);
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static void ScrollBitmapHorizontal(gdrv_bitmap8* bmp, int xStart);
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static void grtext_draw_ttext_in_box();
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static void ApplyPalette(gdrv_bitmap8& bmp);
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static void CreatePreview(gdrv_bitmap8& bmp);
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private:
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static ColorRgba current_palette[256];
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};
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