Added options to save pages into BMP and EMF on Windows.
BUG=179413
R=bo_xu@foxitsoftware.com
Review URL: https://codereview.chromium.org/408403002
diff --git a/samples/pdfium_test.cc b/samples/pdfium_test.cc
index f8e5673..9a6513d 100644
--- a/samples/pdfium_test.cc
+++ b/samples/pdfium_test.cc
@@ -22,8 +22,19 @@
#define snprintf _snprintf
#endif
-static void WritePpm(const char* pdf_name, int num,
- const char* buffer, int stride, int width, int height) {
+enum OutputFormat {
+ OUTPUT_NONE,
+ OUTPUT_PPM,
+#ifdef _WIN32
+ OUTPUT_BMP,
+ OUTPUT_EMF,
+#endif
+};
+
+static void WritePpm(const char* pdf_name, int num, const void* buffer_void,
+ int stride, int width, int height) {
+ const char* buffer = reinterpret_cast<const char*>(buffer_void);
+
if (stride < 0 || width < 0 || height < 0)
return;
if (height > 0 && width > INT_MAX / height)
@@ -61,6 +72,68 @@
fclose(fp);
}
+#ifdef _WIN32
+static void WriteBmp(const char* pdf_name, int num, const void* buffer,
+ int stride, int width, int height) {
+ if (stride < 0 || width < 0 || height < 0)
+ return;
+ if (height > 0 && width > INT_MAX / height)
+ return;
+ int out_len = stride * height;
+ if (out_len > INT_MAX / 3)
+ return;
+
+ char filename[256];
+ snprintf(filename, sizeof(filename), "%s.%d.bmp", pdf_name, num);
+ FILE* fp = fopen(filename, "wb");
+ if (!fp)
+ return;
+
+ BITMAPINFO bmi = {0};
+ bmi.bmiHeader.biSize = sizeof(bmi) - sizeof(RGBQUAD);
+ bmi.bmiHeader.biWidth = width;
+ bmi.bmiHeader.biHeight = -height; // top-down image
+ bmi.bmiHeader.biPlanes = 1;
+ bmi.bmiHeader.biBitCount = 32;
+ bmi.bmiHeader.biCompression = BI_RGB;
+ bmi.bmiHeader.biSizeImage = 0;
+
+ BITMAPFILEHEADER file_header = {0};
+ file_header.bfType = 0x4d42;
+ file_header.bfSize = sizeof(file_header) + bmi.bmiHeader.biSize + out_len;
+ file_header.bfOffBits = file_header.bfSize - out_len;
+
+ fwrite(&file_header, sizeof(file_header), 1, fp);
+ fwrite(&bmi, bmi.bmiHeader.biSize, 1, fp);
+ fwrite(buffer, out_len, 1, fp);
+ fclose(fp);
+}
+
+void WriteEmf(FPDF_PAGE page, const char* pdf_name, int num) {
+ int width = static_cast<int>(FPDF_GetPageWidth(page));
+ int height = static_cast<int>(FPDF_GetPageHeight(page));
+
+ char filename[256];
+ snprintf(filename, sizeof(filename), "%s.%d.emf", pdf_name, num);
+
+ HDC dc = CreateEnhMetaFileA(NULL, filename, NULL, NULL);
+
+ HRGN rgn = CreateRectRgn(0, 0, width, height);
+ SelectClipRgn(dc, rgn);
+ DeleteObject(rgn);
+
+ SelectObject(dc, GetStockObject(NULL_PEN));
+ SelectObject(dc, GetStockObject(WHITE_BRUSH));
+ // If a PS_NULL pen is used, the dimensions of the rectangle are 1 pixel less.
+ Rectangle(dc, 0, 0, width + 1, height + 1);
+
+ FPDF_RenderPage(dc, page, 0, 0, width, height, 0,
+ FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
+
+ DeleteEnhMetaFile(CloseEnhMetaFile(dc));
+}
+#endif
+
int Form_Alert(IPDF_JSPLATFORM*, FPDF_WIDESTRING, FPDF_WIDESTRING, int, int) {
printf("Form_Alert called.\n");
return 0;
@@ -110,15 +183,21 @@
printf("Unsupported feature: %s.\n", feature.c_str());
}
-bool ParseCommandLine(int argc, const char* argv[], bool* write_images,
+bool ParseCommandLine(int argc, const char* argv[], OutputFormat* output_format,
std::list<const char*>* files) {
- *write_images = false;
+ *output_format = OUTPUT_NONE;
files->clear();
int cur_arg = 1;
- if (cur_arg < argc &&
- strcmp(argv[cur_arg], "--write_images") == 0) {
- *write_images = true;
+ if (cur_arg < argc) {
+ if (strcmp(argv[cur_arg], "--ppm") == 0)
+ *output_format = OUTPUT_PPM;
+#ifdef _WIN32
+ if (strcmp(argv[cur_arg], "--emf") == 0)
+ *output_format = OUTPUT_EMF;
+ if (strcmp(argv[cur_arg], "--bmp") == 0)
+ *output_format = OUTPUT_BMP;
+#endif
cur_arg++;
}
@@ -159,7 +238,7 @@
}
void RenderPdf(const char* name, const char* pBuf, size_t len,
- bool write_images) {
+ OutputFormat format) {
printf("Rendering PDF file %s.\n", name);
IPDF_JSPLATFORM platform_callbacks;
@@ -234,11 +313,25 @@
FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
- if (write_images) {
- const char* buffer = reinterpret_cast<const char*>(
- FPDFBitmap_GetBuffer(bitmap));
- int stride = FPDFBitmap_GetStride(bitmap);
- WritePpm(name, i, buffer, stride, width, height);
+ int stride = FPDFBitmap_GetStride(bitmap);
+ const char* buffer =
+ reinterpret_cast<const char*>(FPDFBitmap_GetBuffer(bitmap));
+
+ switch (format) {
+#ifdef _WIN32
+ case OUTPUT_BMP:
+ WriteBmp(name, i, buffer, stride, width, height);
+ break;
+
+ case OUTPUT_EMF:
+ WriteEmf(page, name, i);
+ break;
+#endif
+ case OUTPUT_PPM:
+ WritePpm(name, i, buffer, stride, width, height);
+ break;
+ default:
+ break;
}
FPDFBitmap_Destroy(bitmap);
@@ -259,11 +352,15 @@
int main(int argc, const char* argv[]) {
v8::V8::InitializeICU();
- bool write_images = false;
+ OutputFormat format = OUTPUT_NONE;
std::list<const char*> files;
- if (!ParseCommandLine(argc, argv, &write_images, &files)) {
- printf("Usage is: test [--write_images] /path/to/pdf\n");
- printf("--write_images - to write page images <pdf-name>.<page-number>.ppm\n");
+ if (!ParseCommandLine(argc, argv, &format, &files)) {
+ printf("Usage: pdfium_test [OPTIONS] [FILE]\n");
+ printf("--ppm write page images <pdf-name>.<page-number>.ppm\n");
+#ifdef _WIN32
+ printf("--bmp write page images <pdf-name>.<page-number>.bmp\n");
+ printf("--emf write page meta files <pdf-name>.<page-number>.emf\n");
+#endif
return 1;
}
@@ -293,7 +390,7 @@
if (ret != len) {
fprintf(stderr, "Failed to read: %s\n", filename);
} else {
- RenderPdf(filename, pBuf, len, write_images);
+ RenderPdf(filename, pBuf, len, format);
}
free(pBuf);
}
@@ -302,4 +399,3 @@
return 0;
}
-
