Merge of branch-1.3-Fl_Printer, with the following main changes:

 (1) adding Fl_Device class (and more) for device abstraction
 (2) adding Fl_Pinter class (and more) for printing support.

Todo: Code cleanup, update dependencies, remove/replace test print window.
I'm looking into converting the test window popup in a global shortcut
that would pop up the print dialog now...


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7263 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 253 insertions, 0 deletions

diff --git a/src/Fl_GDI_Printer.cxx b/src/Fl_GDI_Printer.cxx
new file mode 100644
index 000000000..a87b0805f
--- /dev/null
+++ b/src/Fl_GDI_Printer.cxx
@@ -0,0 +1,253 @@
+/*
+ *  Fl_GDI_Printer.cxx
+ */
+
+#ifdef WIN32
+#include <FL/Fl_Printer.H>
+
+
+#include <FL/fl_ask.H>
+#include <math.h>
+
+extern HWND fl_window;
+
+Fl_GDI_Printer::Fl_GDI_Printer(void) : Fl_Virtual_Printer() {
+  hPr = NULL;
+  type_ = gdi_printer;
+}
+
+static void WIN_SetupPrinterDeviceContext(HDC prHDC)
+{
+  if ( !prHDC ) return;
+  
+  fl_window = 0;
+  fl_gc = prHDC;
+  SetGraphicsMode(prHDC, GM_ADVANCED); // to allow for rotations
+  SetMapMode(prHDC, MM_ANISOTROPIC);
+  SetTextAlign(prHDC, TA_BASELINE|TA_LEFT);
+  SetBkMode(prHDC, TRANSPARENT);	
+  // this matches 720 logical units to the number of device units in 10 inches of paper
+  // thus the logical unit is the point (= 1/72 inch)
+  SetWindowExtEx(prHDC, 720, 720, NULL);
+  SetViewportExtEx(prHDC, 10*GetDeviceCaps(prHDC, LOGPIXELSX), 10*GetDeviceCaps(prHDC, LOGPIXELSY), NULL);
+}
+
+
+int Fl_GDI_Printer::start_job (int pagecount, int *frompage, int *topage)
+// returns 0 iff OK
+{
+  DWORD       commdlgerr;
+  DOCINFO     di;
+  char        docName [256];
+  int err = 0;
+  
+  abortPrint = FALSE;
+  memset (&pd, 0, sizeof (PRINTDLG));
+  pd.lStructSize = sizeof (PRINTDLG);
+  pd.hwndOwner = GetForegroundWindow();
+  pd.Flags = PD_RETURNDC | PD_USEDEVMODECOPIESANDCOLLATE | PD_NOSELECTION;
+  pd.nMinPage = 1;
+  pd.nMaxPage = pagecount;
+  if (PrintDlg (&pd) != 0) {
+    hPr = pd.hDC;
+    if (hPr != NULL) {
+      strcpy (docName, "FLTK");
+      memset(&di, 0, sizeof(DOCINFO));
+      di.cbSize = sizeof (DOCINFO);
+      di.lpszDocName = (LPCSTR) docName;
+      prerr = StartDoc (hPr, &di);
+      if (prerr < 1) {
+	abortPrint = TRUE;
+	fl_alert ("StartDoc error %d", prerr);
+	err = 1;
+      }
+    } else {
+      commdlgerr = CommDlgExtendedError ();
+      fl_alert ("Unable to create print context, error %lu",
+		(unsigned long) commdlgerr);
+      err = 1;
+    }
+  } else {
+    err = 1;
+  }
+  if(!err) {
+    if((pd.Flags & PD_PAGENUMS) != 0 ) {
+      if (frompage) *frompage = pd.nFromPage;
+      if (topage) *topage = pd.nToPage;
+    }
+    else {
+      if (frompage) *frompage = 1;
+      if (topage) *topage = pagecount;
+    }
+    x_offset = 0;
+    y_offset = 0;
+    this->set_current();
+  }
+  return err;
+}
+
+void Fl_GDI_Printer::end_job (void)
+{
+  Fl_Device::display_device()->set_current();
+  if (hPr != NULL) {
+    if (! abortPrint) {
+      prerr = EndDoc (hPr);
+      if (prerr < 0) {
+	fl_alert ("EndDoc error %d", prerr);
+      }
+    }
+    DeleteDC (hPr);
+    if (pd.hDevMode != NULL) {
+      GlobalFree (pd.hDevMode);
+    }
+    if (pd.hDevNames != NULL) {
+      GlobalFree (pd.hDevNames);
+    }
+  }
+}
+
+void Fl_GDI_Printer::absolute_printable_rect(int *x, int *y, int *w, int *h)
+{
+  POINT         physPageSize;
+  POINT         pixelsPerInch;
+    
+  if (hPr == NULL) return;
+  SetWindowOrgEx(fl_gc, 0, 0, NULL);
+  
+  physPageSize.x = GetDeviceCaps(hPr, HORZRES);
+  physPageSize.y = GetDeviceCaps(hPr, VERTRES);
+  DPtoLP(hPr, &physPageSize, 1);
+  *w = physPageSize.x + 1;
+  *h = physPageSize.y + 1;
+  pixelsPerInch.x = GetDeviceCaps(hPr, LOGPIXELSX);
+  pixelsPerInch.y = GetDeviceCaps(hPr, LOGPIXELSY);
+  DPtoLP(hPr, &pixelsPerInch, 1);
+  left_margin = (pixelsPerInch.x / 4);
+  *w -= (pixelsPerInch.x / 2);
+  top_margin = (pixelsPerInch.y / 4);
+  *h -= (pixelsPerInch.y / 2);
+  
+  *x = left_margin;
+  *y = top_margin;
+  origin(x_offset, y_offset);
+}
+
+void Fl_GDI_Printer::margins(int *left, int *top, int *right, int *bottom)
+{
+  int x, y, w, h;
+  absolute_printable_rect(&x, &y, &w, &h);
+  if (left) *left = x;
+  if (top) *top = y;
+  if (right) *right = x;
+  if (bottom) *bottom = y;
+}
+
+int Fl_GDI_Printer::printable_rect(int *w, int *h)
+{
+  int x, y;
+  absolute_printable_rect(&x, &y, w, h);
+  return 0;
+}
+
+int Fl_GDI_Printer::start_page (void)
+{
+  int  rsult, w, h;
+  
+  rsult = 0;
+  if (hPr != NULL) {
+    WIN_SetupPrinterDeviceContext (hPr);
+    prerr = StartPage (hPr);
+    if (prerr < 0) {
+      fl_alert ("StartPage error %d", prerr);
+      rsult = 1;
+    }
+    printable_rect(&w, &h);
+    origin(0, 0);
+    image_list_ = NULL;
+    fl_clip_region(0);
+    gc = (void *)fl_gc;
+  }
+  return rsult;
+}
+
+void Fl_GDI_Printer::origin (int deltax, int deltay)
+{
+  SetWindowOrgEx(fl_gc, - left_margin - deltax, - top_margin - deltay, NULL);
+  x_offset = deltax;
+  y_offset = deltay;
+}
+
+void Fl_GDI_Printer::scale (float scalex, float scaley)
+{
+  int w, h;
+  SetWindowExtEx(fl_gc, (int)(720 / scalex + 0.5), (int)(720 / scaley + 0.5), NULL);
+  printable_rect(&w, &h);
+  origin(0, 0);
+}
+
+void Fl_GDI_Printer::rotate (float rot_angle)
+{
+  XFORM mat;
+  float angle;
+  angle = - rot_angle * M_PI / 180.;
+  mat.eM11 = cos(angle);
+  mat.eM12 = sin(angle);
+  mat.eM21 = - mat.eM12;
+  mat.eM22 = mat.eM11;
+  mat.eDx = mat.eDy = 0;
+  SetWorldTransform(fl_gc, &mat);
+}
+
+int Fl_GDI_Printer::end_page (void)
+{
+  int  rsult;
+  
+  rsult = 0;
+  if (hPr != NULL) {
+    prerr = EndPage (hPr);
+    if (prerr < 0) {
+      abortPrint = TRUE;
+      fl_alert ("EndPage error %d", prerr);
+      rsult = 1;
+    }
+  }
+  delete_image_list();
+  gc = NULL;
+  return rsult;
+}
+
+static int translate_stack_depth = 0;
+const int translate_stack_max = 5;
+static int translate_stack_x[translate_stack_max];
+static int translate_stack_y[translate_stack_max];
+
+static void do_translate(int x, int y)
+{
+  XFORM tr;
+  tr.eM11 = tr.eM22 = 1;
+  tr.eM12 = tr.eM21 = 0;
+  tr.eDx =  x;
+  tr.eDy =  y;
+  ModifyWorldTransform(fl_gc, &tr, MWT_LEFTMULTIPLY);
+}
+
+void Fl_GDI_Printer::translate (int x, int y)
+{
+  do_translate(x, y);
+  if (translate_stack_depth < translate_stack_max) {
+    translate_stack_x[translate_stack_depth] = x;
+    translate_stack_y[translate_stack_depth] = y;
+    translate_stack_depth++;
+    }
+}
+
+void Fl_GDI_Printer::untranslate (void)
+{
+  if (translate_stack_depth > 0) {
+    translate_stack_depth--;
+    do_translate( - translate_stack_x[translate_stack_depth], - translate_stack_y[translate_stack_depth] );
+    }
+}
+
+#endif // WIN32
+