Mercurial > public > ostc_companion
annotate ostc45_icon.cpp @ 11:6fba58c4964b
Minor changes done by automatic style checker
| author | Ideenmodellierer |
|---|---|
| date | Mon, 12 Jan 2026 13:57:24 +0000 |
| parents | 115cfa4a3239 |
| children |
| rev | line source |
|---|---|
| 5 | 1 #include "ostc45_icon.h" |
| 2 | |
| 3 //OSTC45_Icon::OSTC45_Icon() {} | |
| 4 | |
| 5 #pragma pack(push, 1) | |
| 6 struct BMPFileHeader | |
| 7 { | |
| 8 uint16_t bfType; | |
| 9 uint32_t bfSize; | |
| 10 uint16_t bfReserved1; | |
| 11 uint16_t bfReserved2; | |
| 12 uint32_t bfOffBits; | |
| 13 }; | |
| 14 | |
| 15 struct BMPInfoHeader | |
| 16 { | |
| 17 uint32_t biSize; | |
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18 int32_t biWidth; |
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19 int32_t biHeight; |
| 5 | 20 uint16_t biPlanes; |
| 21 uint16_t biBitCount; | |
| 22 uint32_t biCompression; | |
| 23 uint32_t biSizeImage; | |
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24 int32_t biXPelsPerMeter; |
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25 int32_t biYPelsPerMeter; |
| 5 | 26 uint32_t biClrUsed; |
| 27 uint32_t biClrImportant; | |
| 28 }; | |
| 29 #pragma pack(pop) | |
| 30 | |
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31 BmpToArray::BmpToArray(const QString &filename) |
| 5 | 32 { |
| 33 loadBMP(filename); | |
| 34 } | |
| 35 | |
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36 void BmpToArray::loadBMP(const QString &filename) |
| 5 | 37 { |
| 38 QFile file(filename); | |
| 39 int dstY; | |
| 40 QByteArray rowBuffer; | |
| 41 bool topDown = false; | |
| 42 BMPFileHeader fileHeader; | |
| 43 BMPInfoHeader infoHeader; | |
| 44 | |
| 45 if (!file.open(QIODevice::ReadOnly)) | |
| 46 throw std::runtime_error("Cannot open BMP file"); | |
| 47 | |
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48 if (file.read(reinterpret_cast<char *>(&fileHeader), sizeof(BMPFileHeader)) |
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49 != sizeof(BMPFileHeader)) |
| 5 | 50 throw std::runtime_error("Failed to read BMP file header"); |
| 51 | |
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52 if (file.read(reinterpret_cast<char *>(&infoHeader), sizeof(BMPInfoHeader)) |
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53 != sizeof(BMPInfoHeader)) |
| 5 | 54 throw std::runtime_error("Failed to read BMP info header"); |
| 55 | |
| 56 if (fileHeader.bfType != 0x4D42) | |
| 57 throw std::runtime_error("Not a valid BMP file"); | |
| 58 | |
| 59 if (infoHeader.biBitCount != 8) | |
| 60 throw std::runtime_error("Only 8-bit BMP supported"); | |
| 61 if (infoHeader.biCompression != 0) | |
| 62 throw std::runtime_error("Compressed BMP not supported"); | |
| 63 | |
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64 if (infoHeader.biWidth > 800) |
| 5 | 65 throw std::runtime_error("Only BMP with 800 or less horizontal pixels supported"); |
| 66 | |
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67 if (infoHeader.biHeight > 480) |
| 5 | 68 throw std::runtime_error("Only BMP with 480 or less vertical pixels supported"); |
| 69 | |
| 70 // Width / Height | |
| 71 width = infoHeader.biWidth; | |
| 72 height = infoHeader.biHeight; | |
| 73 | |
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74 if ((int32_t) height < 0) { |
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75 height = -((int32_t) height); |
| 5 | 76 topDown = true; |
| 77 } | |
| 78 | |
| 79 // Palette | |
| 80 uint32_t colorCount = infoHeader.biClrUsed; | |
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81 if (colorCount == 0) |
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82 colorCount = 256; |
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83 if (colorCount > 256) |
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84 colorCount = 256; |
| 5 | 85 |
| 86 clut.resize(colorCount); | |
| 87 | |
| 88 for (uint32_t i = 0; i < colorCount; ++i) | |
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89 file.read(reinterpret_cast<char *>(&clut[i]), 4); |
| 5 | 90 |
| 91 // CLUT in 32-Bit transform 0x00RRGGBB | |
| 92 clut32.resize(255, 0); | |
| 93 | |
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94 for (uint32_t i = 0; i < colorCount && i < 255; ++i) { |
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95 clut32[i] = (clut[i].r << 16) | (clut[i].g << 8) | (clut[i].b); |
| 5 | 96 } |
| 97 | |
| 98 // Pixel-Data | |
| 99 if (!file.seek(fileHeader.bfOffBits)) | |
| 100 throw std::runtime_error("Failed to seek to pixel data"); | |
| 101 | |
| 102 pixelData.resize(width * height); | |
| 103 | |
| 104 size_t rowSize = (width + 3) & ~3; // 4-Byte alignment | |
| 105 | |
| 106 rowBuffer.resize(rowSize); | |
| 107 | |
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108 for (int y = 0; y < height; ++y) { |
| 5 | 109 if (file.read(rowBuffer.data(), rowSize) != rowSize) |
| 110 throw std::runtime_error("Failed to read BMP pixel row"); | |
| 111 | |
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112 if (topDown) { |
| 5 | 113 dstY = height - 1 - y; |
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114 } else { |
| 5 | 115 dstY = y; |
| 116 } | |
| 117 | |
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118 for (int x = 0; x < width; ++x) { |
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119 pixelData[x * height + dstY] = static_cast<uint8_t>(rowBuffer[x]); |
| 5 | 120 } |
| 121 } | |
| 122 } | |
| 123 QByteArray BmpToArray::getTransferBytes() const | |
| 124 { | |
| 125 QByteArray out; | |
| 126 | |
| 127 out.reserve(clut32.size() * 4 + pixelData.size()); | |
| 128 | |
| 129 // CLUT (32 Bit, Little Endian) | |
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130 for (uint32_t color : clut32) { |
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131 out.append(static_cast<char>(color & 0xFF)); |
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132 out.append(static_cast<char>((color >> 8) & 0xFF)); |
| 5 | 133 out.append(static_cast<char>((color >> 16) & 0xFF)); |
| 134 out.append(static_cast<char>((color >> 24) & 0xFF)); | |
| 135 } | |
| 136 | |
| 137 // Pixel (8 Bit) | |
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138 out.append(reinterpret_cast<const char *>(pixelData.data()), pixelData.size()); |
| 5 | 139 |
| 140 return out; | |
| 141 } | |
| 142 | |
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143 void BmpToArray::getImageXY(uint32_t *x, uint32_t *y) |
| 5 | 144 { |
| 145 *x = width; | |
| 146 *y = height; | |
| 147 } |