test/gtk-test.cc - third_party/poppler - Git at Google

 #include <config.h>

 #ifdef USE_GCC_PRAGMAS
 #pragma implementation
 #endif

 #include <goo/gmem.h>
 #include <splash/SplashTypes.h>
 #include <splash/SplashBitmap.h>
 #include "Object.h"
 #include "SplashOutputDev.h"
 #include "GfxState.h"

 #include <gdk/gdk.h>

 #include "PDFDoc.h"
 #include "GlobalParams.h"
 #include "ErrorCodes.h"
 #include <poppler.h>
 #include <poppler-private.h>
 #include <gtk/gtk.h>
 #include <math.h>

 static int page = 0;
 static gboolean cairo_output = FALSE;
 static gboolean splash_output = FALSE;
 static const char **file_arguments = nullptr;
 static const GOptionEntry options[] = {
   { "cairo", 'c', 0, G_OPTION_ARG_NONE, &cairo_output, "Cairo Output Device", nullptr},
   { "splash", 's', 0, G_OPTION_ARG_NONE, &splash_output, "Splash Output Device", nullptr},
   { "page", 'p', 0, G_OPTION_ARG_INT, &page, "Page number", "PAGE" },
   { G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &file_arguments, nullptr, "PDF-FILES…" },
   { }
 };

 static GList *view_list = nullptr;

 //------------------------------------------------------------------------

 #define xOutMaxRGBCube 6	// max size of RGB color cube

 //------------------------------------------------------------------------
 // GDKSplashOutputDev
 //------------------------------------------------------------------------

 class GDKSplashOutputDev: public SplashOutputDev {
 public:

   GDKSplashOutputDev(GdkScreen *screen,
                      void (*redrawCbkA)(void *data),
                      void *redrawCbkDataA, SplashColor sc);

   virtual ~GDKSplashOutputDev();

   //----- initialization and control

   // End a page.
   void endPage() override;

   // Dump page contents to display.
   void dump() override;

   //----- update text state
   void updateFont(GfxState *state) override;

   //----- special access

   // Clear out the document (used when displaying an empty window).
   void clear();

   // Copy the rectangle (srcX, srcY, width, height) to (destX, destY)
   // in destDC.
   void redraw(int srcX, int srcY,
               cairo_t *cr,
 	      int destX, int destY,
 	      int width, int height);

 private:

   int incrementalUpdate;
   void (*redrawCbk)(void *data);
   void *redrawCbkData;
 };

 typedef struct
 {
   PopplerDocument    *doc;
   GtkWidget          *drawing_area;
   GtkWidget          *spin_button;
   cairo_surface_t    *surface;
   GDKSplashOutputDev *out;
 } View;

 //------------------------------------------------------------------------
 // Constants and macros
 //------------------------------------------------------------------------

 #define xoutRound(x) ((int)(x + 0.5))

 //------------------------------------------------------------------------
 // GDKSplashOutputDev
 //------------------------------------------------------------------------

 GDKSplashOutputDev::GDKSplashOutputDev(GdkScreen *screen,
                                        void (*redrawCbkA)(void *data),
                                        void *redrawCbkDataA, SplashColor sc):
   SplashOutputDev(splashModeRGB8, 4, gFalse, sc),
   incrementalUpdate (1)
 {
   redrawCbk = redrawCbkA;
   redrawCbkData = redrawCbkDataA;
 }

 GDKSplashOutputDev::~GDKSplashOutputDev() {
 }

 void GDKSplashOutputDev::clear() {
   startDoc(nullptr);
   startPage(0, nullptr, nullptr);
 }

 void GDKSplashOutputDev::endPage() {
   SplashOutputDev::endPage();
   if (!incrementalUpdate) {
     (*redrawCbk)(redrawCbkData);
   }
 }

 void GDKSplashOutputDev::dump() {
   if (incrementalUpdate && redrawCbk) {
     (*redrawCbk)(redrawCbkData);
   }
 }

 void GDKSplashOutputDev::updateFont(GfxState *state) {
   SplashOutputDev::updateFont(state);
 }

 void GDKSplashOutputDev::redraw(int srcX, int srcY,
                                 cairo_t *cr,
                                 int destX, int destY,
                                 int width, int height) {
   GdkPixbuf *pixbuf;
   int gdk_rowstride;

   gdk_rowstride = getBitmap()->getRowSize();
   pixbuf = gdk_pixbuf_new_from_data (getBitmap()->getDataPtr() + srcY * gdk_rowstride + srcX * 3,
                                      GDK_COLORSPACE_RGB, FALSE, 8,
                                      width, height, gdk_rowstride,
                                      nullptr, nullptr);

   gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
   cairo_paint (cr);

   g_object_unref (pixbuf);
 }

 static gboolean
 drawing_area_draw (GtkWidget *drawing_area,
                    cairo_t   *cr,
                    View      *view)
 {
   GdkRectangle document;
   GdkRectangle clip;
   GdkRectangle draw;

   document.x = 0;
   document.y = 0;
   if (cairo_output) {
     document.width = cairo_image_surface_get_width (view->surface);
     document.height = cairo_image_surface_get_height (view->surface);
   } else {
     document.width = view->out->getBitmapWidth();
     document.height = view->out->getBitmapHeight();
   }

   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
     return FALSE;

   if (!gdk_rectangle_intersect (&document, &clip, &draw))
     return FALSE;

   if (cairo_output) {
     cairo_set_source_surface (cr, view->surface, 0, 0);
     cairo_paint (cr);
   } else {
     view->out->redraw (draw.x, draw.y,
                        cr,
                        draw.x, draw.y,
                        draw.width, draw.height);
   }

   return TRUE;
 }

 static void
 view_set_page (View *view, int page)
 {
   int w, h;

   if (cairo_output) {
     cairo_t     *cr;
     double       width, height;
     PopplerPage *poppler_page;

     poppler_page = poppler_document_get_page (view->doc, page);
     poppler_page_get_size (poppler_page, &width, &height);
     w = (int) ceil(width);
     h = (int) ceil(height);

     if (view->surface)
       cairo_surface_destroy (view->surface);
     view->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);

     cr = cairo_create (view->surface);
     poppler_page_render (poppler_page, cr);

     cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER);
     cairo_set_source_rgb (cr, 1., 1., 1.);
     cairo_paint (cr);

     cairo_destroy (cr);
     g_object_unref (poppler_page);
   } else {
     view->doc->doc->displayPage (view->out, page + 1, 72, 72, 0, gFalse, gTrue, gTrue);
     w = view->out->getBitmapWidth();
     h = view->out->getBitmapHeight();
   }

   gtk_widget_set_size_request (view->drawing_area, w, h);
   gtk_widget_queue_draw (view->drawing_area);
   gtk_spin_button_set_value (GTK_SPIN_BUTTON (view->spin_button), page);
 }

 static void
 redraw_callback (void *data)
 {
   View *view = (View*) data;

   gtk_widget_queue_draw (view->drawing_area);
 }

 static void
 view_free (View *view)
 {
   if (G_UNLIKELY (!view))
     return;

   g_object_unref (view->doc);
   delete view->out;
   cairo_surface_destroy (view->surface);
   g_slice_free (View, view);
 }

 static void
 destroy_window_callback (GtkWindow *window, View *view)
 {
   view_list = g_list_remove (view_list, view);
   view_free (view);

   if (!view_list)
     gtk_main_quit ();
 }

 static void
 page_changed_callback (GtkSpinButton *button, View *view)
 {
   int page;

   page = gtk_spin_button_get_value_as_int (button);
   view_set_page (view, page);
 }

 static View *
 view_new (PopplerDocument *doc)
 {
   View *view;
   GtkWidget *window;
   GtkWidget *sw;
   GtkWidget *vbox, *hbox;
   guint n_pages;
   PopplerPage *page;

   view = g_slice_new0 (View);

   view->doc = doc;

   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   g_signal_connect (window, "destroy",
                     G_CALLBACK (destroy_window_callback),
                     view);

   page = poppler_document_get_page (doc, 0);
   if (page) {
     double width, height;

     poppler_page_get_size (page, &width, &height);
     gtk_window_set_default_size (GTK_WINDOW (window), (gint)width, (gint)height);
     g_object_unref (page);
   }

   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);

   view->drawing_area = gtk_drawing_area_new ();
   sw = gtk_scrolled_window_new (nullptr, nullptr);
   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
                                   GTK_POLICY_AUTOMATIC,
                                   GTK_POLICY_AUTOMATIC);
 #if GTK_CHECK_VERSION(3, 7, 8)
   gtk_container_add(GTK_CONTAINER(sw), view->drawing_area);
 #else
   gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw),
                                          view->drawing_area);
 #endif
   gtk_widget_show (view->drawing_area);

   gtk_box_pack_end (GTK_BOX (vbox), sw, TRUE, TRUE, 0);
   gtk_widget_show (sw);

   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5);

   n_pages = poppler_document_get_n_pages (doc);
   view->spin_button = gtk_spin_button_new_with_range  (0, n_pages - 1, 1);
   g_signal_connect (view->spin_button, "value-changed",
                     G_CALLBACK (page_changed_callback), view);

   gtk_box_pack_end (GTK_BOX (hbox), view->spin_button, FALSE, TRUE, 0);
   gtk_widget_show (view->spin_button);

   gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
   gtk_widget_show (hbox);

   gtk_container_add (GTK_CONTAINER (window), vbox);
   gtk_widget_show (vbox);

   gtk_widget_show (window);


   if (!cairo_output) {
     SplashColor sc = { 255, 255, 255};

     view->out = new GDKSplashOutputDev (gtk_widget_get_screen (window),
                                         redraw_callback, (void*) view, sc);
     view->out->startDoc(view->doc->doc);
   }

   g_signal_connect (view->drawing_area,
                     "draw",
                     G_CALLBACK (drawing_area_draw),
                     view);

   return view;
 }

 int
 main (int argc, char *argv [])
 {
   GOptionContext *ctx;

   if (argc == 1) {
     char *basename = g_path_get_basename (argv[0]);

     g_printerr ("usage: %s PDF-FILES…\n", basename);
     g_free (basename);

     return -1;
   }

   ctx = g_option_context_new (nullptr);
   g_option_context_add_main_entries (ctx, options, "main");
   g_option_context_parse (ctx, &argc, &argv, nullptr);
   g_option_context_free (ctx);

   gtk_init (&argc, &argv);

   globalParams = new GlobalParams();

   for (int i = 0; file_arguments[i]; i++) {
     View            *view;
     GFile           *file;
     PopplerDocument *doc;
     GError          *error = nullptr;

     file = g_file_new_for_commandline_arg (file_arguments[i]);
     doc = poppler_document_new_from_gfile (file, nullptr, nullptr, &error);
     if (!doc) {
       gchar *uri;

       uri = g_file_get_uri (file);
       g_printerr ("Error opening document %s: %s\n", uri, error->message);
       g_error_free (error);
       g_free (uri);
       g_object_unref (file);

       continue;
     }
     g_object_unref (file);

     view = view_new (doc);
     view_list = g_list_prepend (view_list, view);
     view_set_page (view, CLAMP (page, 0, poppler_document_get_n_pages (doc) - 1));
   }

   gtk_main ();

   delete globalParams;

   return 0;
 }
	#include <config.h>

	#ifdef USE_GCC_PRAGMAS
	#pragma implementation
	#endif

	#include <goo/gmem.h>
	#include <splash/SplashTypes.h>
	#include <splash/SplashBitmap.h>
	#include "Object.h"
	#include "SplashOutputDev.h"
	#include "GfxState.h"

	#include <gdk/gdk.h>

	#include "PDFDoc.h"
	#include "GlobalParams.h"
	#include "ErrorCodes.h"
	#include <poppler.h>
	#include <poppler-private.h>
	#include <gtk/gtk.h>
	#include <math.h>

	static int page = 0;
	static gboolean cairo_output = FALSE;
	static gboolean splash_output = FALSE;
	static const char **file_arguments = nullptr;
	static const GOptionEntry options[] = {
	{ "cairo", 'c', 0, G_OPTION_ARG_NONE, &cairo_output, "Cairo Output Device", nullptr},
	{ "splash", 's', 0, G_OPTION_ARG_NONE, &splash_output, "Splash Output Device", nullptr},
	{ "page", 'p', 0, G_OPTION_ARG_INT, &page, "Page number", "PAGE" },
	{ G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &file_arguments, nullptr, "PDF-FILES…" },
	{ }
	};

	static GList *view_list = nullptr;

	//------------------------------------------------------------------------

	#define xOutMaxRGBCube 6 // max size of RGB color cube

	//------------------------------------------------------------------------
	// GDKSplashOutputDev
	//------------------------------------------------------------------------

	class GDKSplashOutputDev: public SplashOutputDev {
	public:

	GDKSplashOutputDev(GdkScreen *screen,
	void (redrawCbkA)(void data),
	void *redrawCbkDataA, SplashColor sc);

	virtual ~GDKSplashOutputDev();

	//----- initialization and control

	// End a page.
	void endPage() override;

	// Dump page contents to display.
	void dump() override;

	//----- update text state
	void updateFont(GfxState *state) override;

	//----- special access

	// Clear out the document (used when displaying an empty window).
	void clear();

	// Copy the rectangle (srcX, srcY, width, height) to (destX, destY)
	// in destDC.
	void redraw(int srcX, int srcY,
	cairo_t *cr,
	int destX, int destY,
	int width, int height);

	private:

	int incrementalUpdate;
	void (redrawCbk)(void data);
	void *redrawCbkData;
	};

	typedef struct
	{
	PopplerDocument *doc;
	GtkWidget *drawing_area;
	GtkWidget *spin_button;
	cairo_surface_t *surface;
	GDKSplashOutputDev *out;
	} View;

	//------------------------------------------------------------------------
	// Constants and macros
	//------------------------------------------------------------------------

	#define xoutRound(x) ((int)(x + 0.5))

	//------------------------------------------------------------------------
	// GDKSplashOutputDev
	//------------------------------------------------------------------------

	GDKSplashOutputDev::GDKSplashOutputDev(GdkScreen *screen,
	void (redrawCbkA)(void data),
	void *redrawCbkDataA, SplashColor sc):
	SplashOutputDev(splashModeRGB8, 4, gFalse, sc),
	incrementalUpdate (1)
	{
	redrawCbk = redrawCbkA;
	redrawCbkData = redrawCbkDataA;
	}

	GDKSplashOutputDev::~GDKSplashOutputDev() {
	}

	void GDKSplashOutputDev::clear() {
	startDoc(nullptr);
	startPage(0, nullptr, nullptr);
	}

	void GDKSplashOutputDev::endPage() {
	SplashOutputDev::endPage();
	if (!incrementalUpdate) {
	(*redrawCbk)(redrawCbkData);
	}
	}

	void GDKSplashOutputDev::dump() {
	if (incrementalUpdate && redrawCbk) {
	(*redrawCbk)(redrawCbkData);
	}
	}

	void GDKSplashOutputDev::updateFont(GfxState *state) {
	SplashOutputDev::updateFont(state);
	}

	void GDKSplashOutputDev::redraw(int srcX, int srcY,
	cairo_t *cr,
	int destX, int destY,
	int width, int height) {
	GdkPixbuf *pixbuf;
	int gdk_rowstride;

	gdk_rowstride = getBitmap()->getRowSize();
	pixbuf = gdk_pixbuf_new_from_data (getBitmap()->getDataPtr() + srcY * gdk_rowstride + srcX * 3,
	GDK_COLORSPACE_RGB, FALSE, 8,
	width, height, gdk_rowstride,
	nullptr, nullptr);

	gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
	cairo_paint (cr);

	g_object_unref (pixbuf);
	}

	static gboolean
	drawing_area_draw (GtkWidget *drawing_area,
	cairo_t *cr,
	View *view)
	{
	GdkRectangle document;
	GdkRectangle clip;
	GdkRectangle draw;

	document.x = 0;
	document.y = 0;
	if (cairo_output) {
	document.width = cairo_image_surface_get_width (view->surface);
	document.height = cairo_image_surface_get_height (view->surface);
	} else {
	document.width = view->out->getBitmapWidth();
	document.height = view->out->getBitmapHeight();
	}

	if (!gdk_cairo_get_clip_rectangle (cr, &clip))
	return FALSE;

	if (!gdk_rectangle_intersect (&document, &clip, &draw))
	return FALSE;

	if (cairo_output) {
	cairo_set_source_surface (cr, view->surface, 0, 0);
	cairo_paint (cr);
	} else {
	view->out->redraw (draw.x, draw.y,
	cr,
	draw.x, draw.y,
	draw.width, draw.height);
	}

	return TRUE;
	}

	static void
	view_set_page (View *view, int page)
	{
	int w, h;

	if (cairo_output) {
	cairo_t *cr;
	double width, height;
	PopplerPage *poppler_page;

	poppler_page = poppler_document_get_page (view->doc, page);
	poppler_page_get_size (poppler_page, &width, &height);
	w = (int) ceil(width);
	h = (int) ceil(height);

	if (view->surface)
	cairo_surface_destroy (view->surface);
	view->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);

	cr = cairo_create (view->surface);
	poppler_page_render (poppler_page, cr);

	cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER);
	cairo_set_source_rgb (cr, 1., 1., 1.);
	cairo_paint (cr);

	cairo_destroy (cr);
	g_object_unref (poppler_page);
	} else {
	view->doc->doc->displayPage (view->out, page + 1, 72, 72, 0, gFalse, gTrue, gTrue);
	w = view->out->getBitmapWidth();
	h = view->out->getBitmapHeight();
	}

	gtk_widget_set_size_request (view->drawing_area, w, h);
	gtk_widget_queue_draw (view->drawing_area);
	gtk_spin_button_set_value (GTK_SPIN_BUTTON (view->spin_button), page);
	}

	static void
	redraw_callback (void *data)
	{
	View view = (View) data;

	gtk_widget_queue_draw (view->drawing_area);
	}

	static void
	view_free (View *view)
	{
	if (G_UNLIKELY (!view))
	return;

	g_object_unref (view->doc);
	delete view->out;
	cairo_surface_destroy (view->surface);
	g_slice_free (View, view);
	}

	static void
	destroy_window_callback (GtkWindow window, View view)
	{
	view_list = g_list_remove (view_list, view);
	view_free (view);

	if (!view_list)
	gtk_main_quit ();
	}

	static void
	page_changed_callback (GtkSpinButton button, View view)
	{
	int page;

	page = gtk_spin_button_get_value_as_int (button);
	view_set_page (view, page);
	}

	static View *
	view_new (PopplerDocument *doc)
	{
	View *view;
	GtkWidget *window;
	GtkWidget *sw;
	GtkWidget vbox, hbox;
	guint n_pages;
	PopplerPage *page;

	view = g_slice_new0 (View);

	view->doc = doc;

	window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	g_signal_connect (window, "destroy",
	G_CALLBACK (destroy_window_callback),
	view);

	page = poppler_document_get_page (doc, 0);
	if (page) {
	double width, height;

	poppler_page_get_size (page, &width, &height);
	gtk_window_set_default_size (GTK_WINDOW (window), (gint)width, (gint)height);
	g_object_unref (page);
	}

	vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 5);

	view->drawing_area = gtk_drawing_area_new ();
	sw = gtk_scrolled_window_new (nullptr, nullptr);
	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
	GTK_POLICY_AUTOMATIC,
	GTK_POLICY_AUTOMATIC);
	#if GTK_CHECK_VERSION(3, 7, 8)
	gtk_container_add(GTK_CONTAINER(sw), view->drawing_area);
	#else
	gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw),
	view->drawing_area);
	#endif
	gtk_widget_show (view->drawing_area);

	gtk_box_pack_end (GTK_BOX (vbox), sw, TRUE, TRUE, 0);
	gtk_widget_show (sw);

	hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5);

	n_pages = poppler_document_get_n_pages (doc);
	view->spin_button = gtk_spin_button_new_with_range (0, n_pages - 1, 1);
	g_signal_connect (view->spin_button, "value-changed",
	G_CALLBACK (page_changed_callback), view);

	gtk_box_pack_end (GTK_BOX (hbox), view->spin_button, FALSE, TRUE, 0);
	gtk_widget_show (view->spin_button);

	gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
	gtk_widget_show (hbox);

	gtk_container_add (GTK_CONTAINER (window), vbox);
	gtk_widget_show (vbox);

	gtk_widget_show (window);


	if (!cairo_output) {
	SplashColor sc = { 255, 255, 255};

	view->out = new GDKSplashOutputDev (gtk_widget_get_screen (window),
	redraw_callback, (void*) view, sc);
	view->out->startDoc(view->doc->doc);
	}

	g_signal_connect (view->drawing_area,
	"draw",
	G_CALLBACK (drawing_area_draw),
	view);

	return view;
	}

	int
	main (int argc, char *argv [])
	{
	GOptionContext *ctx;

	if (argc == 1) {
	char *basename = g_path_get_basename (argv[0]);

	g_printerr ("usage: %s PDF-FILES…\n", basename);
	g_free (basename);

	return -1;
	}

	ctx = g_option_context_new (nullptr);
	g_option_context_add_main_entries (ctx, options, "main");
	g_option_context_parse (ctx, &argc, &argv, nullptr);
	g_option_context_free (ctx);

	gtk_init (&argc, &argv);

	globalParams = new GlobalParams();

	for (int i = 0; file_arguments[i]; i++) {
	View *view;
	GFile *file;
	PopplerDocument *doc;
	GError *error = nullptr;

	file = g_file_new_for_commandline_arg (file_arguments[i]);
	doc = poppler_document_new_from_gfile (file, nullptr, nullptr, &error);
	if (!doc) {
	gchar *uri;

	uri = g_file_get_uri (file);
	g_printerr ("Error opening document %s: %s\n", uri, error->message);
	g_error_free (error);
	g_free (uri);
	g_object_unref (file);

	continue;
	}
	g_object_unref (file);

	view = view_new (doc);
	view_list = g_list_prepend (view_list, view);
	view_set_page (view, CLAMP (page, 0, poppler_document_get_n_pages (doc) - 1));
	}

	gtk_main ();

	delete globalParams;

	return 0;
	}