X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a1d5a2937a9905e19f0c95c8f8fd825f9030a618..960615f41009ac62e99f833afbec10d96bd2d2f9:/src/html/htmprint.cpp

diff --git a/src/html/htmprint.cpp b/src/html/htmprint.cpp
index 834e791b2b..6a22f88547 100644
--- a/src/html/htmprint.cpp
+++ b/src/html/htmprint.cpp
@@ -33,6 +33,10 @@
 #include "wx/wfstream.h"
 
 
+// default font size of normal text (HTML font size 0) for printing, in points:
+#define DEFAULT_PRINT_FONT_SIZE   12
+
+
 //--------------------------------------------------------------------------------
 // wxHtmlDCRenderer
 //--------------------------------------------------------------------------------
@@ -46,6 +50,7 @@ wxHtmlDCRenderer::wxHtmlDCRenderer() : wxObject()
     m_Parser = new wxHtmlWinParser();
     m_FS = new wxFileSystem();
     m_Parser->SetFS(m_FS);
+    SetStandardFonts(DEFAULT_PRINT_FONT_SIZE);
 }
 
 
@@ -69,6 +74,9 @@ void wxHtmlDCRenderer::SetDC(wxDC *dc, double pixel_scale)
 
 void wxHtmlDCRenderer::SetSize(int width, int height)
 {
+    wxCHECK_RET( width, "width must be non-zero" );
+    wxCHECK_RET( height, "height must be non-zero" );
+
     m_Width = width;
     m_Height = height;
 }
@@ -76,9 +84,10 @@ void wxHtmlDCRenderer::SetSize(int width, int height)
 
 void wxHtmlDCRenderer::SetHtmlText(const wxString& html, const wxString& basepath, bool isdir)
 {
-    if (m_DC == NULL) return;
+    wxCHECK_RET( m_DC, "SetDC() must be called before SetHtmlText()" );
+    wxCHECK_RET( m_Width, "SetSize() must be called before SetHtmlText()" );
 
-    if (m_Cells != NULL) delete m_Cells;
+    wxDELETE(m_Cells);
 
     m_FS->ChangePathTo(basepath, isdir);
     m_Cells = (wxHtmlContainerCell*) m_Parser->Parse(html);
@@ -91,8 +100,10 @@ void wxHtmlDCRenderer::SetFonts(const wxString& normal_face, const wxString& fix
                                 const int *sizes)
 {
     m_Parser->SetFonts(normal_face, fixed_face, sizes);
-    if (m_DC == NULL && m_Cells != NULL)
+
+    if ( m_Cells )
         m_Cells->Layout(m_Width);
+    // else: SetHtmlText() not yet called, no need for relayout
 }
 
 void wxHtmlDCRenderer::SetStandardFonts(int size,
@@ -100,17 +111,20 @@ void wxHtmlDCRenderer::SetStandardFonts(int size,
                                         const wxString& fixed_face)
 {
     m_Parser->SetStandardFonts(size, normal_face, fixed_face);
-    if (m_DC == NULL && m_Cells != NULL)
+
+    if ( m_Cells )
         m_Cells->Layout(m_Width);
+    // else: SetHtmlText() not yet called, no need for relayout
 }
 
 int wxHtmlDCRenderer::Render(int x, int y,
                              wxArrayInt& known_pagebreaks,
                              int from, int dont_render, int to)
 {
-    int pbreak, hght;
+    wxCHECK_MSG( m_Cells, 0, "SetHtmlText() must be called before Render()" );
+    wxCHECK_MSG( m_DC, 0, "SetDC() must be called before Render()" );
 
-    if (m_Cells == NULL || m_DC == NULL) return 0;
+    int pbreak, hght;
 
     pbreak = (int)(from + m_Height);
     while (m_Cells->AdjustPagebreak(&pbreak, known_pagebreaks)) {}
@@ -127,7 +141,7 @@ int wxHtmlDCRenderer::Render(int x, int y,
         m_DC->SetClippingRegion(x, y, m_Width, hght);
         m_Cells->Draw(*m_DC,
                       x, (y - from),
-                      y, pbreak + (y /*- from*/),
+                      y, y + hght,
                       rinfo);
         m_DC->DestroyClippingRegion();
     }
@@ -136,11 +150,14 @@ int wxHtmlDCRenderer::Render(int x, int y,
     else return GetTotalHeight();
 }
 
+int wxHtmlDCRenderer::GetTotalWidth() const
+{
+    return m_Cells ? m_Cells->GetWidth() : 0;
+}
 
-int wxHtmlDCRenderer::GetTotalHeight()
+int wxHtmlDCRenderer::GetTotalHeight() const
 {
-    if (m_Cells) return m_Cells->GetHeight();
-    else return 0;
+    return m_Cells ? m_Cells->GetHeight() : 0;
 }
 
 
@@ -161,6 +178,7 @@ wxHtmlPrintout::wxHtmlPrintout(const wxString& title) : wxPrintout(title)
     m_Footers[0] = m_Footers[1] = wxEmptyString;
     m_HeaderHeight = m_FooterHeight = 0;
     SetMargins(); // to default values
+    SetStandardFonts(DEFAULT_PRINT_FONT_SIZE);
 }
 
 
@@ -182,6 +200,40 @@ void wxHtmlPrintout::AddFilter(wxHtmlFilter *filter)
     m_Filters.Append(filter);
 }
 
+bool
+wxHtmlPrintout::CheckFit(const wxSize& pageArea, const wxSize& docArea) const
+{
+    if ( docArea.x > pageArea.x )
+    {
+        wxMessageDialog
+            dlg
+            (
+                NULL,
+                wxString::Format
+                (
+                 _("The document \"%s\" doesn't fit on the page "
+                   "horizontally and will be truncated if printed.\n"
+                   "\n"
+                   "Would you like to proceed with printing it nevertheless?"),
+                 GetTitle()
+                ),
+                _("Printing"),
+                wxOK | wxCANCEL | wxCANCEL_DEFAULT | wxICON_QUESTION
+            );
+        dlg.SetExtendedMessage
+            (
+                _("If possible, try changing the layout parameters to "
+                  "make the printout more narrow.")
+            );
+        dlg.SetOKLabel(wxID_PRINT);
+
+        if ( dlg.ShowModal() == wxID_CANCEL )
+            return false;
+    }
+
+    return true;
+}
+
 void wxHtmlPrintout::OnPreparePrinting()
 {
     int pageWidth, pageHeight, mm_w, mm_h, scr_w, scr_h, dc_w, dc_h;
@@ -194,13 +246,16 @@ void wxHtmlPrintout::OnPreparePrinting()
 
     int ppiPrinterX, ppiPrinterY;
     GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
+    wxUnusedVar(ppiPrinterX);
     int ppiScreenX, ppiScreenY;
     GetPPIScreen(&ppiScreenX, &ppiScreenY);
+    wxUnusedVar(ppiScreenX);
 
     wxDisplaySize(&scr_w, &scr_h);
     GetDC()->GetSize(&dc_w, &dc_h);
 
-    GetDC()->SetUserScale((double)dc_w / (double)pageWidth, (double)dc_w / (double)pageWidth);
+    GetDC()->SetUserScale((double)dc_w / (double)pageWidth,
+                          (double)dc_h / (double)pageHeight);
 
     /* prepare headers/footers renderer: */
 
@@ -230,14 +285,27 @@ void wxHtmlPrintout::OnPreparePrinting()
 
     /* prepare main renderer: */
     m_Renderer->SetDC(GetDC(), (double)ppiPrinterY / (double)ppiScreenY);
-    m_Renderer->SetSize((int) (ppmm_h * (mm_w - m_MarginLeft - m_MarginRight)),
-                          (int) (ppmm_v * (mm_h - m_MarginTop - m_MarginBottom) -
-                          m_FooterHeight - m_HeaderHeight -
-                          ((m_HeaderHeight == 0) ? 0 : m_MarginSpace * ppmm_v) -
-                          ((m_FooterHeight == 0) ? 0 : m_MarginSpace * ppmm_v)
-                          ));
+
+    const int printAreaW = int(ppmm_h * (mm_w - m_MarginLeft - m_MarginRight));
+    int printAreaH = int(ppmm_v * (mm_h - m_MarginTop - m_MarginBottom));
+    if ( m_HeaderHeight )
+        printAreaH -= int(m_HeaderHeight + m_MarginSpace * ppmm_v);
+    if ( m_FooterHeight )
+        printAreaH -= int(m_FooterHeight + m_MarginSpace * ppmm_v);
+
+    m_Renderer->SetSize(printAreaW, printAreaH);
     m_Renderer->SetHtmlText(m_Document, m_BasePath, m_BasePathIsDir);
-    CountPages();
+
+    if ( CheckFit(wxSize(printAreaW, printAreaH),
+                  wxSize(m_Renderer->GetTotalWidth(),
+                         m_Renderer->GetTotalHeight())) )
+    {
+        // do paginate the document
+        CountPages();
+    }
+    //else: if we don't call CountPages() m_PageBreaks remains empty and our
+    //      GetPageInfo() will return 0 as max page and so nothing will be
+    //      printed
 }
 
 bool wxHtmlPrintout::OnBeginDocument(int startPage, int endPage)
@@ -251,7 +319,7 @@ bool wxHtmlPrintout::OnBeginDocument(int startPage, int endPage)
 bool wxHtmlPrintout::OnPrintPage(int page)
 {
     wxDC *dc = GetDC();
-    if (dc)
+    if (dc && dc->IsOk())
     {
         if (HasPage(page))
             RenderPage(dc, page);
@@ -264,19 +332,19 @@ bool wxHtmlPrintout::OnPrintPage(int page)
 void wxHtmlPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 {
     *minPage = 1;
-    if ( m_NumPages >= (signed)m_PageBreaks.Count()-1)
+    if ( m_NumPages >= (signed)m_PageBreaks.GetCount()-1)
         *maxPage = m_NumPages;
     else
-        *maxPage = (signed)m_PageBreaks.Count()-1;
+        *maxPage = (signed)m_PageBreaks.GetCount()-1;
     *selPageFrom = 1;
-    *selPageTo = (signed)m_PageBreaks.Count()-1;
+    *selPageTo = (signed)m_PageBreaks.GetCount()-1;
 }
 
 
 
 bool wxHtmlPrintout::HasPage(int pageNum)
 {
-    return pageNum > 0 && (unsigned)pageNum < m_PageBreaks.Count();
+    return pageNum > 0 && (unsigned)pageNum < m_PageBreaks.GetCount();
 }
 
 
@@ -374,7 +442,7 @@ void wxHtmlPrintout::CountPages()
                                  m_PageBreaks,
                                  pos, true, INT_MAX);
         m_PageBreaks.Add( pos);
-        if( m_PageBreaks.Count() > wxHTML_PRINT_MAX_PAGES)
+        if( m_PageBreaks.GetCount() > wxHTML_PRINT_MAX_PAGES)
         {
             wxMessageBox( _("HTML pagination algorithm generated more than the allowed maximum number of pages and it can't continue any longer!"),
             _("Warning"), wxCANCEL | wxICON_ERROR );
@@ -406,11 +474,12 @@ void wxHtmlPrintout::RenderPage(wxDC *dc, int page)
     GetPPIScreen(&ppiScreenX, &ppiScreenY);
     wxUnusedVar(ppiScreenX);
 
-    dc->SetUserScale((double)dc_w / (double)pageWidth, (double)dc_w / (double)pageWidth);
+    dc->SetUserScale((double)dc_w / (double)pageWidth,
+                     (double)dc_h / (double)pageHeight);
 
     m_Renderer->SetDC(dc, (double)ppiPrinterY / (double)ppiScreenY);
 
-    dc->SetBackgroundMode(wxTRANSPARENT);
+    dc->SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
 
     m_Renderer->Render((int) (ppmm_h * m_MarginLeft),
                          (int) (ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight), m_PageBreaks,
@@ -440,7 +509,7 @@ wxString wxHtmlPrintout::TranslateHeader(const wxString& instr, int page)
     num.Printf(wxT("%i"), page);
     r.Replace(wxT("@PAGENUM@"), num);
 
-    num.Printf(wxT("%lu"), (unsigned long)(m_PageBreaks.Count() - 1));
+    num.Printf(wxT("%lu"), (unsigned long)(m_PageBreaks.GetCount() - 1));
     r.Replace(wxT("@PAGESCNT@"), num);
 
     const wxDateTime now = wxDateTime::Now();
@@ -500,7 +569,7 @@ wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxWindow *parentWin
     m_PageSetupData->SetMarginTopLeft(wxPoint(25, 25));
     m_PageSetupData->SetMarginBottomRight(wxPoint(25, 25));
 
-    SetFonts(wxEmptyString, wxEmptyString, NULL);
+    SetStandardFonts(DEFAULT_PRINT_FONT_SIZE);
 }