QSize Document::GetPageSize (int index) const
{
auto page = spectre_document_get_page (SD_, index);
const auto& result = GetSpectrePageSize (page);
spectre_page_free (page);
return result;
}
static const char *
_spectre_render_page (const char *filename,
const char *page_label,
cairo_surface_t **surface_out)
{
static const cairo_user_data_key_t key;
SpectreDocument *document;
SpectreStatus status;
int width, height, stride;
unsigned char *pixels;
cairo_surface_t *surface;
document = spectre_document_new ();
spectre_document_load (document, filename);
status = spectre_document_status (document);
if (status) {
spectre_document_free (document);
return spectre_status_to_string (status);
}
if (page_label) {
SpectrePage *page;
SpectreRenderContext *rc;
page = spectre_document_get_page_by_label (document, page_label);
spectre_document_free (document);
if (page == NULL)
return "page not found";
spectre_page_get_size (page, &width, &height);
rc = spectre_render_context_new ();
spectre_render_context_set_page_size (rc, width, height);
spectre_page_render (page, rc, &pixels, &stride);
spectre_render_context_free (rc);
status = spectre_page_status (page);
spectre_page_free (page);
if (status) {
free (pixels);
return spectre_status_to_string (status);
}
} else {
spectre_document_get_page_size (document, &width, &height);
spectre_document_render (document, &pixels, &stride);
spectre_document_free (document);
}
surface = cairo_image_surface_create_for_data (pixels,
CAIRO_FORMAT_RGB24,
width, height,
stride);
cairo_surface_set_user_data (surface, &key,
pixels, (cairo_destroy_func_t) free);
*surface_out = surface;
return NULL;
}
void
eps_page_delete (Eps_Page *page)
{
if (!page)
return;
spectre_render_context_free (page->rc);
spectre_page_free (page->page);
free (page);
}
zathura_error_t
ps_page_clear(zathura_page_t* page, SpectrePage* spectre_page)
{
if (page == NULL) {
return ZATHURA_ERROR_INVALID_ARGUMENTS;
}
if (spectre_page != NULL) {
spectre_page_free(spectre_page);
}
return ZATHURA_ERROR_OK;
}
void
eps_page_page_set (Eps_Page *page, int p)
{
SpectrePage *new_page;
SpectreStatus status;
if (!page)
return;
new_page = spectre_document_get_page(page->document, p);
status = spectre_page_status (new_page);
if (status != SPECTRE_STATUS_SUCCESS) {
printf ("[eps] %s\n", spectre_status_to_string (status));
return;
}
spectre_page_free (page->page);
page->page = new_page;
}
QImage Document::RenderPage (int index, double xRes, double yRes)
{
auto page = spectre_document_get_page (SD_, index);
auto rc = spectre_render_context_new ();
auto size = GetPageSize (index);
spectre_render_context_set_scale (rc, xRes, yRes);
size.rwidth () *= xRes;
size.rheight () *= yRes;
unsigned char *data = 0;
int rowLength = 0;
spectre_page_render (page, rc, &data, &rowLength);
spectre_render_context_free (rc);
spectre_page_free (page);
const QImage& img = rowLength == size.width () * 4 ?
QImage (data, size.width (), size.height (), QImage::Format_RGB32) :
QImage (data, rowLength / 4, size.height (), QImage::Format_RGB32)
.copy (0, 0, size.width (), size.height ());
free (data);
return img;
}
bool PostScriptDocument::load(const QString& fileName) {
p_filename = fileName;
p_internal_document = spectre_document_new();
spectre_document_load(p_internal_document, QFile::encodeName(p_filename));
const SpectreStatus loadStatus = spectre_document_status(p_internal_document);
if (loadStatus != SPECTRE_STATUS_SUCCESS) {
kDebug() << "ERR:" << spectre_status_to_string(loadStatus);
spectre_document_free(p_internal_document);
clear();
return FALSE;
}
int numPages = spectre_document_get_n_pages(p_internal_document);
if (numPages > 0) {
kDebug() << "Page Count: " << numPages;
} else {
kWarning() << "Unable to calculate number of pages.";
numPages = 0;
}
int width, height;
spectre_document_get_page_size(p_internal_document, &width, &height);
if ((width > 0) && (height > 0)) {
p_page_size = QSize(width, height);
kDebug() << "Page Size: " << width << "x" << height << " (" << PaperSizeUtils::paperSizeToString(PaperSizeUtils::sizeToPaperSize(p_page_size)) << ")";
} else {
kWarning() << "Unable to calculate page size.";
}
SpectreOrientation orientation = spectre_document_get_orientation(p_internal_document);
bool reversePage;
p_orientation = spectreOrientationToOrientation(orientation, &reversePage);
kDebug() << "Page Orientation: " << PaperSizeUtils::orientationToString(p_orientation);
kDebug() << "Note: The page orientation may differ from orientation for each page.";
/* Load the pages now */
SpectrePage *page;
SpectreOrientation pageOrientation;
QPrinter::Orientation pageOrientation2;
width = 0; height = 0;
for (int i = 0; i < numPages; ++i) {
pageOrientation = SPECTRE_ORIENTATION_PORTRAIT;
page = spectre_document_get_page(p_internal_document, i);
if (spectre_document_status(p_internal_document)) {
kWarning() << "Error getting page " << i << spectre_status_to_string(spectre_document_status(p_internal_document));
} else {
spectre_page_get_size(page, &width, &height);
pageOrientation = spectre_page_get_orientation(page);
}
spectre_page_free(page);
pageOrientation2 = spectreOrientationToOrientation(pageOrientation, &reversePage);
p_pages.append(PostScriptDocumentPage(QSize(width, height), pageOrientation2, reversePage));
kDebug() << "Append page" << i+1 << "with Size (" << width << "," << height << ")," << PaperSizeUtils::orientationToString(pageOrientation2);
}
kDebug() << "Loaded" << p_pages.count() << "pages";
p_is_valid = TRUE;
return TRUE;
}
QImage* PostScriptDocument::renderPage(const int pageNum, const int dpiX, const int dpiY) {
Q_UNUSED(dpiX);
Q_UNUSED(dpiY);
if ((pageNum < 0) || (pageNum >= p_pages.count())) return NULL;
PostScriptDocumentPage page = p_pages[pageNum];
/*int width = reqSize.width();
int height = reqSize.height();
double magnify = 1.0f;
if (page.orientation() == QPrinter::Landscape) {
magnify = qMax((double)height / (double)page.size().width(),
(double)width / (double)page.size().height());
} else {
magnify = qMax((double)width / (double)page.size().width(),
(double)height / (double)page.size().height());
}*/
SpectrePage *spage = spectre_document_get_page(p_internal_document, pageNum);
SpectreRenderContext *renderContext = spectre_render_context_new();
/*spectre_render_context_set_scale(renderContext, magnify, magnify);*/
spectre_render_context_set_use_platform_fonts(renderContext, false);
spectre_render_context_set_antialias_bits(renderContext, 4, 4);
/* Do not use spectre_render_context_set_rotation makes some files not render correctly, e.g. bug210499.ps
* so we basically do the rendering without any rotation and then rotate to the orientation as needed
* spectre_render_context_set_rotation(m_renderContext, req.orientation);
*/
unsigned char *data = NULL;
int row_length = 0;
spectre_page_render(spage, renderContext, &data, &row_length);
if (spectre_page_status(spage) != SPECTRE_STATUS_SUCCESS) {
kDebug() << "Failed to render page" << pageNum+1 << ". Spectre fail status:" << spectre_page_status(spage);
return NULL;
}
int width = page.size().width();
int height = page.size().height();
kDebug() << "Size of page" << pageNum+1 << "to render: " << width << "x" << height;
// Qt4 needs the missing alpha of QImage::Format_RGB32 to be 0xff
if (data && data[3] != 0xff)
for (int i = 3; i < row_length * height; i += 4)
data[i] = 0xff;
QImage image;
if (row_length == width * 4) {
image = QImage(data, width, height, QImage::Format_RGB32);
} else {
// In case this ends up beign very slow we can try with some memmove
QImage aux(data, row_length / 4, height, QImage::Format_RGB32);
image = QImage(aux.copy(0, 0, width, height));
}
/*if (page.reversePage()) {
if (page.orientation() == QPrinter::Portrait) {
QTransform m;
m.rotate(180);
image = image.transformed(m);
} else if (page.orientation() == QPrinter::Landscape) {
QTransform m;
m.rotate(270);
image = image.transformed(m);
}
} else {
if (page.orientation() == QPrinter::Landscape) {
QTransform m;
m.rotate(90);
image = image.transformed(m);
}
}*/
QImage *result = new QImage(image.copy());
if ((result->width() != width) || (result->height() != height)) {
kWarning().nospace() << "Generated image does not match wanted size: "
<< "[" << result->width() << "x" << result->height() << "] vs requested "
<< "[" << width << "x" << height << "]";
QImage aux = result->scaled(width, height);
delete result;
result = new QImage(aux);
}
spectre_page_free(spage);
spectre_render_context_free(renderContext);
return result;
}
