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[win] Move BitmapInfo to its own file (clip_win_bmp)
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| Original file line number | Diff line number | Diff line change |
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@@ -8,6 +8,8 @@ | |
| #define CLIP_COMMON_H_INCLUDED | ||
| #pragma once | ||
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| #include "clip.h" | ||
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| namespace clip { | ||
| namespace details { | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,26 @@ | ||
| // Clip Library | ||
| // Copyright (c) 2024 David Capello | ||
| // | ||
| // This file is released under the terms of the MIT license. | ||
| // Read LICENSE.txt for more information. | ||
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| #ifndef CLIP_WIN_H_INCLUDED | ||
| #define CLIP_WIN_H_INCLUDED | ||
| #pragma once | ||
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| #include <windows.h> | ||
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| #ifndef LCS_WINDOWS_COLOR_SPACE | ||
| #define LCS_WINDOWS_COLOR_SPACE 'Win ' | ||
| #endif | ||
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| #ifndef CF_DIBV5 | ||
| #define CF_DIBV5 17 | ||
| #endif | ||
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| #if CLIP_ENABLE_IMAGE | ||
| #include "clip_win_bmp.h" | ||
| #include "clip_win_wic.h" | ||
| #endif | ||
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| #endif // CLIP_WIN_H_INCLUDED |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,142 @@ | ||
| // Clip Library | ||
| // Copyright (c) 2015-2024 David Capello | ||
| // | ||
| // This file is released under the terms of the MIT license. | ||
| // Read LICENSE.txt for more information. | ||
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| #include "clip_win_bmp.h" | ||
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| #include "clip.h" | ||
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| namespace clip { | ||
| namespace win { | ||
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| namespace { | ||
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| unsigned long get_shift_from_mask(unsigned long mask) { | ||
| unsigned long shift = 0; | ||
| for (shift=0; shift<sizeof(unsigned long)*8; ++shift) | ||
| if (mask & (1 << shift)) | ||
| return shift; | ||
| return shift; | ||
| } | ||
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| } // anonymous namespace | ||
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| BitmapInfo::BitmapInfo() { | ||
| // Use DIBV5 only for 32 bpp uncompressed bitmaps and when all | ||
| // masks are valid. | ||
| if (IsClipboardFormatAvailable(CF_DIBV5)) { | ||
| b5 = (BITMAPV5HEADER*)GetClipboardData(CF_DIBV5); | ||
| if (b5 && | ||
| b5->bV5BitCount == 32 && | ||
| ((b5->bV5Compression == BI_RGB) || | ||
| (b5->bV5Compression == BI_BITFIELDS && | ||
| b5->bV5RedMask && b5->bV5GreenMask && | ||
| b5->bV5BlueMask && b5->bV5AlphaMask))) { | ||
| width = b5->bV5Width; | ||
| height = b5->bV5Height; | ||
| bit_count = b5->bV5BitCount; | ||
| compression = b5->bV5Compression; | ||
| if (compression == BI_BITFIELDS) { | ||
| red_mask = b5->bV5RedMask; | ||
| green_mask = b5->bV5GreenMask; | ||
| blue_mask = b5->bV5BlueMask; | ||
| alpha_mask = b5->bV5AlphaMask; | ||
| } | ||
| else { | ||
| red_mask = 0xff0000; | ||
| green_mask = 0xff00; | ||
| blue_mask = 0xff; | ||
| alpha_mask = 0xff000000; | ||
| } | ||
| return; | ||
| } | ||
| } | ||
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| if (IsClipboardFormatAvailable(CF_DIB)) | ||
| bi = (BITMAPINFO*)GetClipboardData(CF_DIB); | ||
| if (!bi) | ||
| return; | ||
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| width = bi->bmiHeader.biWidth; | ||
| height = bi->bmiHeader.biHeight; | ||
| bit_count = bi->bmiHeader.biBitCount; | ||
| compression = bi->bmiHeader.biCompression; | ||
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| if (compression == BI_BITFIELDS) { | ||
| red_mask = *((uint32_t*)&bi->bmiColors[0]); | ||
| green_mask = *((uint32_t*)&bi->bmiColors[1]); | ||
| blue_mask = *((uint32_t*)&bi->bmiColors[2]); | ||
| if (bit_count == 32) | ||
| alpha_mask = 0xff000000; | ||
| } | ||
| else if (compression == BI_RGB) { | ||
| switch (bit_count) { | ||
| case 32: | ||
| red_mask = 0xff0000; | ||
| green_mask = 0xff00; | ||
| blue_mask = 0xff; | ||
| alpha_mask = 0xff000000; | ||
| break; | ||
| case 24: | ||
| case 8: // We return 8bpp images as 24bpp | ||
| red_mask = 0xff0000; | ||
| green_mask = 0xff00; | ||
| blue_mask = 0xff; | ||
| break; | ||
| case 16: | ||
| red_mask = 0x7c00; | ||
| green_mask = 0x03e0; | ||
| blue_mask = 0x001f; | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| void BitmapInfo::fill_spec(image_spec& spec) { | ||
| spec.width = width; | ||
| spec.height = (height >= 0 ? height: -height); | ||
| // We convert indexed to 24bpp RGB images to match the OS X behavior | ||
| spec.bits_per_pixel = bit_count; | ||
| if (spec.bits_per_pixel <= 8) | ||
| spec.bits_per_pixel = 24; | ||
| spec.bytes_per_row = width*((spec.bits_per_pixel+7)/8); | ||
| spec.red_mask = red_mask; | ||
| spec.green_mask = green_mask; | ||
| spec.blue_mask = blue_mask; | ||
| spec.alpha_mask = alpha_mask; | ||
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| switch (spec.bits_per_pixel) { | ||
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| case 24: { | ||
| // We need one extra byte to avoid a crash updating the last | ||
| // pixel on last row using: | ||
| // | ||
| // *((uint32_t*)ptr) = pixel24bpp; | ||
| // | ||
| ++spec.bytes_per_row; | ||
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| // Align each row to 32bpp | ||
| int padding = (4-(spec.bytes_per_row&3))&3; | ||
| spec.bytes_per_row += padding; | ||
| break; | ||
| } | ||
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| case 16: { | ||
| int padding = (4-(spec.bytes_per_row&3))&3; | ||
| spec.bytes_per_row += padding; | ||
| break; | ||
| } | ||
| } | ||
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| unsigned long* masks = &spec.red_mask; | ||
| unsigned long* shifts = &spec.red_shift; | ||
| for (unsigned long* shift=shifts, *mask=masks; shift<shifts+4; ++shift, ++mask) { | ||
| if (*mask) | ||
| *shift = get_shift_from_mask(*mask); | ||
| } | ||
| } | ||
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| } // namespace win | ||
| } // namespace clip |
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