TEST_F(FPDFViewEmbeddertest, FPDF_RenderPageBitmapWithMatrix) {
const char kAllBlackMd5sum[] = "5708fc5c4a8bd0abde99c8e8f0390615";
const char kTopLeftQuarterBlackMd5sum[] = "24e4d1ec06fa0258af758cfc8b2ad50a";
EXPECT_TRUE(OpenDocument("black.pdf"));
FPDF_PAGE page = LoadPage(0);
EXPECT_NE(nullptr, page);
const int width = static_cast<int>(FPDF_GetPageWidth(page));
const int height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(612, width);
EXPECT_EQ(792, height);
FPDF_BITMAP bitmap = RenderPage(page);
CompareBitmap(bitmap, width, height, kAllBlackMd5sum);
FPDFBitmap_Destroy(bitmap);
// Try rendering with an identity matrix. The output should be the same as
// the RenderPage() output.
FS_MATRIX matrix;
matrix.a = 1;
matrix.b = 0;
matrix.c = 0;
matrix.d = 1;
matrix.e = 0;
matrix.f = 0;
FS_RECTF rect;
rect.left = 0;
rect.top = 0;
rect.right = width;
rect.bottom = height;
bitmap = FPDFBitmap_Create(width, height, 0);
FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
FPDF_RenderPageBitmapWithMatrix(bitmap, page, &matrix, &rect, 0);
CompareBitmap(bitmap, width, height, kAllBlackMd5sum);
FPDFBitmap_Destroy(bitmap);
// Now render again with the image scaled.
matrix.a = 0.5;
matrix.d = 0.5;
bitmap = FPDFBitmap_Create(width, height, 0);
FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
FPDF_RenderPageBitmapWithMatrix(bitmap, page, &matrix, &rect, 0);
CompareBitmap(bitmap, width, height, kTopLeftQuarterBlackMd5sum);
FPDFBitmap_Destroy(bitmap);
UnloadPage(page);
}
FPDF_BITMAP EmbedderTest::RenderPage(FPDF_PAGE page) {
int width = static_cast<int>(FPDF_GetPageWidth(page));
int height = static_cast<int>(FPDF_GetPageHeight(page));
FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0);
FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
FPDF_FFLDraw(form_handle_, bitmap, page, 0, 0, width, height, 0, 0);
return bitmap;
}
FPDF_BITMAP EmbedderTest::RenderPage(FPDF_PAGE page) {
int width = static_cast<int>(FPDF_GetPageWidth(page));
int height = static_cast<int>(FPDF_GetPageHeight(page));
int alpha = FPDFPage_HasTransparency(page) ? 1 : 0;
FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, alpha);
FPDF_DWORD fill_color = alpha ? 0x00000000 : 0xFFFFFFFF;
FPDFBitmap_FillRect(bitmap, 0, 0, width, height, fill_color);
FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
FPDF_FFLDraw(form_handle_, bitmap, page, 0, 0, width, height, 0, 0);
return bitmap;
}
wxBitmap wxPDFViewPage::CreateBitmap(FPDF_PAGE page, FPDF_FORMHANDLE form, const wxSize& bmpSize, int flags)
{
FPDF_BITMAP bitmap = FPDFBitmap_Create(bmpSize.x, bmpSize.y, 0);
FPDFBitmap_FillRect(bitmap, 0, 0, bmpSize.x, bmpSize.y, 0xFFFFFFFF);
FPDF_RenderPageBitmap(bitmap, page, 0, 0, bmpSize.x, bmpSize.y, 0, flags);
unsigned char* buffer =
reinterpret_cast<unsigned char*>(FPDFBitmap_GetBuffer(bitmap));
if (form)
FPDF_FFLDraw(form, bitmap, page, 0, 0, bmpSize.x, bmpSize.y, 0, flags);
// Convert BGRA image data from PDF SDK to RGB image data
wxBitmap bmp(bmpSize, 24);
unsigned char* srcP = buffer;
wxNativePixelData data(bmp);
wxNativePixelData::Iterator p(data);
for (int y = 0; y < bmpSize.y; ++y)
{
wxNativePixelData::Iterator rowStart = p;
for (int x = 0; x < bmpSize.x; ++x, ++p)
{
p.Blue() = *(srcP++);
p.Green() = *(srcP++);
p.Red() = *(srcP++);
srcP++;
}
p = rowStart;
p.OffsetY(data, 1);
}
FPDFBitmap_Destroy(bitmap);
return bmp;
}
