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_render (const Eps_Page *page,
Evas_Object *o)
{
unsigned char *data;
unsigned char *d;
unsigned int *m = NULL;
double hscale;
double vscale;
SpectreStatus status;
int width;
int height;
int stride;
int yy;
if (!page || !o)
return;
spectre_page_render (page->page, page->rc,
&data, &stride);
status = spectre_page_status (page->page);
if (status != SPECTRE_STATUS_SUCCESS) {
printf ("[eps] %s\n", spectre_status_to_string (status));
return;
}
eps_page_scale_get (page, &hscale, &vscale);
eps_page_size_get (page, &width, &height);
width *= hscale;
height *= vscale;
evas_object_image_size_set (o, width, height);
evas_object_image_fill_set (o, 0, 0, width, height);
m = (unsigned int *)evas_object_image_data_get (o, 1);
if (!m) {
free (data);
return;
}
if (stride == 4 * width)
memcpy(m, data, height * stride);
else {
d = data;
for (yy = 0; yy < height; d += stride, m += width, ++yy) {
memcpy (m, d, width * 4);
}
}
evas_object_image_data_update_add (o, 0, 0, width, height);
evas_object_resize (o, width, height);
free (data);
}
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;
}
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;
}
