From: Alex Schwartz <alexschwartz01@gmail.com> --- dlls/winewayland.drv/wayland_surface.c | 55 ++++++++++++++++++++------ 1 file changed, 44 insertions(+), 11 deletions(-) diff --git a/dlls/winewayland.drv/wayland_surface.c b/dlls/winewayland.drv/wayland_surface.c index 14171cfb911..31c110acd02 100644 --- a/dlls/winewayland.drv/wayland_surface.c +++ b/dlls/winewayland.drv/wayland_surface.c @@ -866,6 +866,28 @@ err: return NULL; } +/*********************************************************************** + * wayland_shm_buffer_copy_center_square + * + * Copies src into the center of bits. + */ +static void wayland_shm_buffer_copy_center_square(const unsigned int *src, + int src_w, int src_h, + int dst_edge, + unsigned int *bits) +{ + const int off_x = (dst_edge - src_w) / 2; + const int off_y = (dst_edge - src_h) / 2; + + /* Copy the original image into the centered square */ + for (int y = 0; y < src_h; ++y) + { + const unsigned int *s = src + y * src_w; + unsigned int *d = bits + (off_y + y) * dst_edge + off_x; + memcpy(d, s, src_w * 4); + } +} + /*********************************************************************** * wayland_shm_buffer_from_color_bitmaps * @@ -880,14 +902,17 @@ struct wayland_shm_buffer *wayland_shm_buffer_from_color_bitmaps(HDC hdc, HBITMA char buffer[FIELD_OFFSET(BITMAPINFO, bmiColors[256])]; BITMAPINFO *info = (BITMAPINFO *)buffer; BITMAP bm; - unsigned int *ptr, *bits = NULL; + unsigned int *ptr, *bits = NULL, *tmp; unsigned char *mask_bits = NULL; - int i, j; + int i, j, dst_edge; BOOL has_alpha = FALSE; if (!NtGdiExtGetObjectW(color, sizeof(bm), &bm)) goto failed; - shm_buffer = wayland_shm_buffer_create(bm.bmWidth, bm.bmHeight, + /* Make the buffer square - edge length is the larger side */ + dst_edge = (bm.bmWidth > bm.bmHeight) ? bm.bmWidth : bm.bmHeight; + + shm_buffer = wayland_shm_buffer_create(dst_edge, dst_edge, WL_SHM_FORMAT_ARGB8888); if (!shm_buffer) goto failed; bits = shm_buffer->map_data; @@ -904,27 +929,35 @@ struct wayland_shm_buffer *wayland_shm_buffer_from_color_bitmaps(HDC hdc, HBITMA info->bmiHeader.biClrUsed = 0; info->bmiHeader.biClrImportant = 0; - if (!NtGdiGetDIBitsInternal(hdc, color, 0, bm.bmHeight, bits, info, + if (!(tmp = malloc(bm.bmWidth * bm.bmHeight * 4))) goto failed; + + if (!NtGdiGetDIBitsInternal(hdc, color, 0, bm.bmHeight, tmp, info, DIB_RGB_COLORS, 0, 0)) goto failed; - for (i = 0; i < bm.bmWidth * bm.bmHeight; i++) + wayland_shm_buffer_copy_center_square(tmp, bm.bmWidth, bm.bmHeight, dst_edge, bits); + + free(tmp); + + for (i = 0; i < dst_edge * dst_edge; i++) + { if ((has_alpha = (bits[i] & 0xff000000) != 0)) break; + } if (!has_alpha) { - unsigned int width_bytes = (bm.bmWidth + 31) / 32 * 4; + unsigned int width_bytes = (dst_edge + 31) / 32 * 4; /* generate alpha channel from the mask */ info->bmiHeader.biBitCount = 1; - info->bmiHeader.biSizeImage = width_bytes * bm.bmHeight; + info->bmiHeader.biSizeImage = width_bytes * dst_edge; if (!(mask_bits = malloc(info->bmiHeader.biSizeImage))) goto failed; - if (!NtGdiGetDIBitsInternal(hdc, mask, 0, bm.bmHeight, mask_bits, + if (!NtGdiGetDIBitsInternal(hdc, mask, 0, dst_edge, mask_bits, info, DIB_RGB_COLORS, 0, 0)) goto failed; ptr = bits; - for (i = 0; i < bm.bmHeight; i++) + for (i = 0; i < dst_edge; i++) { - for (j = 0; j < bm.bmWidth; j++, ptr++) + for (j = 0; j < dst_edge; j++, ptr++) { if (!((mask_bits[i * width_bytes + j / 8] << (j % 8)) & 0x80)) *ptr |= 0xff000000; @@ -934,7 +967,7 @@ struct wayland_shm_buffer *wayland_shm_buffer_from_color_bitmaps(HDC hdc, HBITMA } /* Wayland requires pre-multiplied alpha values */ - for (ptr = bits, i = 0; i < bm.bmWidth * bm.bmHeight; ptr++, i++) + for (ptr = bits, i = 0; i < dst_edge * dst_edge; ptr++, i++) { unsigned char alpha = *ptr >> 24; if (alpha == 0) -- GitLab https://gitlab.winehq.org/wine/wine/-/merge_requests/9832