#include "wx/settings.h"
#include "wx/msgdlg.h"
#include "wx/module.h"
+ #include "wx/sizer.h"
#endif
#include "wx/print.h"
#include "wx/html/htmprint.h"
#include "wx/wxhtml.h"
#include "wx/wfstream.h"
+#include "wx/infobar.h"
// default font size of normal text (HTML font size 0) for printing, in points:
#define DEFAULT_PRINT_FONT_SIZE 12
+// CSS specification offer following guidance on dealing with pixel sizes
+// when printing at
+// http://www.w3.org/TR/2004/CR-CSS21-20040225/syndata.html#length-units:
+//
+// Pixel units are relative to the resolution of the viewing device, i.e.,
+// most often a computer display. If the pixel density of the output
+// device is very different from that of a typical computer display, the
+// user agent should rescale pixel values. It is recommended that the [
+// reference pixel] be the visual angle of one pixel on a device with a
+// pixel density of 96dpi and a distance from the reader of an arm's
+// length. For a nominal arm's length of 28 inches, the visual angle is
+// therefore about 0.0213 degrees.
+//
+// For reading at arm's length, 1px thus corresponds to about 0.26 mm
+// (1/96 inch). When printed on a laser printer, meant for reading at a
+// little less than arm's length (55 cm, 21 inches), 1px is about 0.20 mm.
+// On a 300 dots-per-inch (dpi) printer, that may be rounded up to 3 dots
+// (0.25 mm); on a 600 dpi printer, it can be rounded to 5 dots.
+//
+// See also http://trac.wxwidgets.org/ticket/10942.
+#define TYPICAL_SCREEN_DPI 96.0
+
//--------------------------------------------------------------------------------
// wxHtmlDCRenderer
//--------------------------------------------------------------------------------
-void wxHtmlDCRenderer::SetDC(wxDC *dc, double pixel_scale)
+void wxHtmlDCRenderer::SetDC(wxDC *dc, double pixel_scale, double font_scale)
{
m_DC = dc;
- m_Parser->SetDC(m_DC, pixel_scale);
+ m_Parser->SetDC(m_DC, pixel_scale, font_scale);
}
bool
wxHtmlPrintout::CheckFit(const wxSize& pageArea, const wxSize& docArea) const
{
- if ( docArea.x > pageArea.x )
+ // Nothing to do if the contents fits horizontally.
+ if ( docArea.x <= pageArea.x )
+ return true;
+
+ // Otherwise warn the user more or less intrusively depending on whether
+ // we're previewing or printing:
+ if ( wxPrintPreview * const preview = GetPreview() )
+ {
+ // Don't annoy the user too much when previewing by using info bar
+ // instead of a dialog box.
+#if wxUSE_INFOBAR
+ wxFrame * const parent = preview->GetFrame();
+ wxCHECK_MSG( parent, false, "No parent preview frame?" );
+
+ wxSizer * const sizer = parent->GetSizer();
+ wxCHECK_MSG( sizer, false, "Preview frame should be using sizers" );
+
+ wxInfoBar * const bar = new wxInfoBar(parent);
+ sizer->Add(bar, wxSizerFlags().Expand());
+
+ // Note that the message here is similar to the one below but not
+ // exactly the same, notably we don't use the document title here
+ // because it's already clear which document it pertains to and the
+ // title may be long enough to make the text not fit in the window.
+ bar->ShowMessage
+ (
+ _("This document doesn't fit on the page horizontally and "
+ "will be truncated when it is printed."),
+ wxICON_WARNING
+ );
+#endif // wxUSE_INFOBAR
+ }
+ else // We're going to really print and not just preview.
{
+ // This is our last chance to warn the user that the output will be
+ // mangled so do show a message box.
wxMessageDialog
dlg
(
void wxHtmlPrintout::OnPreparePrinting()
{
- int pageWidth, pageHeight, mm_w, mm_h, scr_w, scr_h, dc_w, dc_h;
+ int pageWidth, pageHeight, mm_w, mm_h, dc_w, dc_h;
float ppmm_h, ppmm_v;
GetPageSizePixels(&pageWidth, &pageHeight);
GetPPIScreen(&ppiScreenX, &ppiScreenY);
wxUnusedVar(ppiScreenX);
- wxDisplaySize(&scr_w, &scr_h);
GetDC()->GetSize(&dc_w, &dc_h);
GetDC()->SetUserScale((double)dc_w / (double)pageWidth,
/* prepare headers/footers renderer: */
- m_RendererHdr->SetDC(GetDC(), (double)ppiPrinterY / (double)ppiScreenY);
+ m_RendererHdr->SetDC(GetDC(),
+ (double)ppiPrinterY / TYPICAL_SCREEN_DPI,
+ (double)ppiPrinterY / (double)ppiScreenY);
m_RendererHdr->SetSize((int) (ppmm_h * (mm_w - m_MarginLeft - m_MarginRight)),
(int) (ppmm_v * (mm_h - m_MarginTop - m_MarginBottom)));
if (m_Headers[0] != wxEmptyString)
}
/* prepare main renderer: */
- m_Renderer->SetDC(GetDC(), (double)ppiPrinterY / (double)ppiScreenY);
+ m_Renderer->SetDC(GetDC(),
+ (double)ppiPrinterY / TYPICAL_SCREEN_DPI,
+ (double)ppiPrinterY / (double)ppiScreenY);
const int printAreaW = int(ppmm_h * (mm_w - m_MarginLeft - m_MarginRight));
int printAreaH = int(ppmm_v * (mm_h - m_MarginTop - m_MarginBottom));
if ( CheckFit(wxSize(printAreaW, printAreaH),
wxSize(m_Renderer->GetTotalWidth(),
- m_Renderer->GetTotalHeight())) )
+ m_Renderer->GetTotalHeight())) || IsPreview() )
{
// do paginate the document
CountPages();
{
wxBusyCursor wait;
- int pageWidth, pageHeight, mm_w, mm_h, scr_w, scr_h, dc_w, dc_h;
+ int pageWidth, pageHeight, mm_w, mm_h, dc_w, dc_h;
float ppmm_h, ppmm_v;
GetPageSizePixels(&pageWidth, &pageHeight);
GetPageSizeMM(&mm_w, &mm_h);
ppmm_h = (float)pageWidth / mm_w;
ppmm_v = (float)pageHeight / mm_h;
- wxDisplaySize(&scr_w, &scr_h);
dc->GetSize(&dc_w, &dc_h);
int ppiPrinterX, ppiPrinterY;
dc->SetUserScale((double)dc_w / (double)pageWidth,
(double)dc_h / (double)pageHeight);
- m_Renderer->SetDC(dc, (double)ppiPrinterY / (double)ppiScreenY);
+ m_Renderer->SetDC(dc,
+ (double)ppiPrinterY / TYPICAL_SCREEN_DPI,
+ (double)ppiPrinterY / (double)ppiScreenY);
dc->SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
m_PageBreaks[page-1], false, m_PageBreaks[page]-m_PageBreaks[page-1]);
- m_RendererHdr->SetDC(dc, (double)ppiPrinterY / (double)ppiScreenY);
+ m_RendererHdr->SetDC(dc,
+ (double)ppiPrinterY / TYPICAL_SCREEN_DPI,
+ (double)ppiPrinterY / (double)ppiScreenY);
if (m_Headers[page % 2] != wxEmptyString)
{
m_RendererHdr->SetHtmlText(TranslateHeader(m_Headers[page % 2], page));
projects / wxWidgets.git / blobdiff