Postscript support through libspectre

README

-zathura - pdf viewer
+zathura - a document viewer
 --------------------
-zathura is a pdf viewer based on the poppler pdf rendering library
+zathura is a highly customizable and functional document viewer based on the
+girara user interface library and several document libraries.
 
 Requirements
 ------------
-poppler-glib (0.12.3)
-gtk2 (2.18.6)
-glib2 (2.22.4)
-
-Configuration
--------------
-You can modify some parts of zathura by editing the config.h file
+gtk2 (>= 2.18.6)
+girara
 
 Installation
 ------------
-Customise config.h according to your wishes and run the following
-command to build and install zathura:
+To build and install zathura:
 
   make install
 
@@ -24,9 +19,3 @@ Uninstall:
 To delete zathura from your system, just type:
 
   make uninstall
-
-Use zathura
------------
-Just run:
-
-  zathura <file>

document.c

@@ -131,7 +131,7 @@ zathura_document_plugins_free(zathura_t* zathura)
   if (iter == NULL) {
     return;
   }
-  
+
   do {
     zathura_document_plugin_t* plugin = (zathura_document_plugin_t*) girara_list_iterator_data(iter);
     free(plugin->file_extension);
@@ -158,7 +158,7 @@ zathura_document_plugin_register(zathura_t* zathura, zathura_document_plugin_t*
         girara_error("plugin: already registered for filetype %s\n", plugin->file_extension);
         girara_list_iterator_free(iter);
         return false;
-      }    
+      }
     } while (girara_list_iterator_next(iter));
     girara_list_iterator_free(iter);
   }
@@ -237,7 +237,7 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* password
   if (iter == NULL) {
     goto error_free;
   }
-  
+
   do {
     zathura_document_plugin_t* plugin = (zathura_document_plugin_t*) girara_list_iterator_data(iter);
     if (!strcmp(file_extension, plugin->file_extension)) {
@@ -403,6 +403,7 @@ zathura_page_get(zathura_document_t* document, unsigned int page_id)
     page->event_box    = gtk_event_box_new();
     page->drawing_area = gtk_drawing_area_new();
     page->surface      = NULL;
+    page->document     = document;
     g_signal_connect(page->drawing_area, "expose-event", G_CALLBACK(page_expose_event), page);
 
     gtk_widget_set_size_request(page->drawing_area, page->width * document->scale, page->height * document->scale);

ft/ps/Makefile

+# See LICENSE file for license and copyright information
+
+include config.mk
+
+PLUGIN   = ps
+SOURCE   = ps.c
+OBJECTS  = ${SOURCE:.c=.o}
+DOBJECTS = ${SOURCE:.c=.do}
+
+all: options ${PLUGIN}
+
+options:
+	@echo ${PLUGIN} build options:
+	@echo "CFLAGS  = ${CFLAGS}"
+	@echo "LDFLAGS = ${LDFLAGS}"
+	@echo "DFLAGS  = ${DFLAGS}"
+	@echo "CC      = ${CC}"
+
+%.o: %.c
+	@echo CC $<
+	@mkdir -p .depend
+	@${CC} -c ${CFLAGS} -o $@ $< -MMD -MF .depend/$@.dep
+
+%.do: %.c
+	@echo CC $<
+	@mkdir -p .depend
+	@${CC} -c ${CFLAGS} ${DFLAGS} -o $@ $< -MMD -MF .depend/$@.dep
+
+${OBJECTS}:  config.mk
+${DOBJECTS}: config.mk
+
+${PLUGIN}: ${OBJECTS}
+	@echo LD $@
+	@${CC} -shared ${LDFLAGS} -o ${PLUGIN}.so $(OBJECTS) ${LIBS}
+
+${PLUGIN}-debug: ${DOBJECTS}
+	@echo LD $@
+	@${CC} -shared ${LDFLAGS} -o ${PLUGIN}.so $(DOBJECTS) ${LIBS}
+
+clean:
+	@rm -rf ${OBJECTS} ${DOBJECTS} $(PLUGIN).so .depend
+
+debug: options ${PLUGIN}-debug
+
+install: all
+	@echo installing ${PLUGIN} plugin
+	@mkdir -p ${DESTDIR}${PREFIX}/lib/zathura
+	@cp -f ${PLUGIN}.so ${DESTDIR}${PREFIX}/lib/zathura
+
+uninstall:
+	@echo uninstalling ${PLUGIN} plugin
+	@rm -f ${DESTDIR}${PREFIX}/lib/zathura/${PLUGIN}.so
+	@rm -rf ${DESTDIR}${PREFIX}/lib/zathura
+
+-include $(wildcard .depend/*.dep)
+
+.PHONY: all options clean debug install uninstall

ft/ps/config.mk

+# See LICENSE file for license and copyright information
+
+# paths
+PREFIX ?= /usr
+
+# libs
+GTK_INC = $(shell pkg-config --cflags gtk+-2.0)
+GTK_LIB = $(shell pkg-config --libs gtk+-2.0)
+
+INCS = -I. -I/usr/include ${GTK_INC}
+LIBS = -lc ${GTK_LIB} -lspectre
+
+# flags
+CFLAGS += -std=c99 -fPIC -pedantic -Wall -Wno-format-zero-length $(INCS)
+
+# debug
+DFLAGS = -g
+
+# compiler
+CC ?= gcc
+LD ?= ld

ft/ps/ps.c

+/* See LICENSE file for license and copyright information */
+
+#include <stdlib.h>
+
+#include "ps.h"
+#include "../../zathura.h"
+
+void
+plugin_register(zathura_document_plugin_t* plugin)
+{
+  plugin->file_extension = "ps";
+  plugin->open_function  = ps_document_open;
+}
+
+bool
+ps_document_open(zathura_document_t* document)
+{
+  if (!document) {
+    goto error_ret;
+  }
+
+  document->functions.document_free             = ps_document_free;
+  document->functions.page_get                  = ps_page_get;
+  document->functions.page_render               = ps_page_render;
+  document->functions.page_free                 = ps_page_free;
+
+  document->data = malloc(sizeof(ps_document_t));
+  if (!document->data) {
+    goto error_ret;
+  }
+
+  ps_document_t* ps_document = (ps_document_t*) document->data;
+  ps_document->document      = spectre_document_new();
+
+  if (ps_document->document == NULL) {
+    goto error_free;
+  }
+
+  spectre_document_load(ps_document->document, document->file_path);
+
+  if (spectre_document_status(ps_document->document) != SPECTRE_STATUS_SUCCESS) {
+    goto error_free;
+  }
+
+  document->number_of_pages = spectre_document_get_n_pages(ps_document->document);
+
+  return true;
+
+error_free:
+
+  if (ps_document->document != NULL) {
+    spectre_document_free(ps_document->document);
+  }
+
+  free(document->data);
+  document->data = NULL;
+
+error_ret:
+
+  return false;
+}
+
+bool
+ps_document_free(zathura_document_t* document)
+{
+  if (!document) {
+    return false;
+  }
+
+  if (document->data != NULL) {
+    ps_document_t* ps_document = (ps_document_t*) document->data;
+    spectre_document_free(ps_document->document);
+    free(document->data);
+    document->data = NULL;
+  }
+
+  return true;
+}
+
+zathura_page_t*
+ps_page_get(zathura_document_t* document, unsigned int page)
+{
+  if (!document || !document->data) {
+    return NULL;
+  }
+
+  ps_document_t* ps_document    = (ps_document_t*) document->data;
+  zathura_page_t* document_page = malloc(sizeof(zathura_page_t));
+
+  if (document_page == NULL) {
+    goto error_ret;
+  }
+
+  SpectrePage* ps_page = spectre_document_get_page(ps_document->document, page);
+
+  if (ps_page == NULL) {
+    goto error_free;
+  }
+
+  int page_width;
+  int page_height;
+  spectre_page_get_size(ps_page, &(page_width), &(page_height));
+
+  document_page->width    = page_width;
+  document_page->height   = page_height;
+  document_page->document = document;
+  document_page->data     = ps_page;
+
+  return document_page;
+
+error_free:
+
+  free(document_page);
+
+error_ret:
+
+  return NULL;
+}
+
+bool
+ps_page_free(zathura_page_t* page)
+{
+  if (page == NULL) {
+    return false;
+  }
+
+  if (page->data != NULL) {
+    SpectrePage* ps_page = (SpectrePage*) page->data;
+    spectre_page_free(ps_page);
+  }
+
+  free(page);
+
+  return true;
+}
+
+zathura_image_buffer_t*
+ps_page_render(zathura_page_t* page)
+{
+  if (!page || !page->data || !page->document) {
+    return NULL;
+  }
+
+  /* calculate sizes */
+  unsigned int page_width  = page->document->scale * page->width;
+  unsigned int page_height = page->document->scale * page->height;
+
+  /* create image buffer */
+  zathura_image_buffer_t* image_buffer = zathura_image_buffer_create(page_width, page_height);
+
+  if (image_buffer == NULL) {
+    return NULL;
+  }
+
+  SpectrePage* ps_page          = (SpectrePage*) page->data;
+  SpectreRenderContext* context = spectre_render_context_new();
+
+  spectre_render_context_set_scale(context, page->document->scale, page->document->scale);
+  spectre_render_context_set_rotation(context, 0);
+
+  unsigned char* page_data;
+  int row_length;
+  spectre_page_render(ps_page, context, &page_data, &row_length);
+
+  for (unsigned int y = 0; y < page_height; y++) {
+    for (unsigned int x = 0; x < page_width; x++) {
+      unsigned char *s = page_data + y * row_length + x * 4;
+      guchar* p = image_buffer->data + y * image_buffer->rowstride + x * 3;
+      p[0] = s[0];
+      p[1] = s[1];
+      p[2] = s[2];
+    }
+  }
+
+  spectre_render_context_free(context);
+
+  ps_document_t* ps_document = (ps_document_t*) page->document->data;
+
+  return image_buffer;
+}

ft/ps/ps.h

+/* See LICENSE file for license and copyright information */
+
+#ifndef PS_H
+#define PS_H
+
+#include <stdbool.h>
+#include <libspectre/spectre.h>
+
+#include "../../document.h"
+
+typedef struct ps_document_s
+{
+  SpectreDocument* document;
+} ps_document_t;
+
+bool ps_document_open(zathura_document_t* document);
+bool ps_document_free(zathura_document_t* document);
+zathura_page_t* ps_page_get(zathura_document_t* document, unsigned int page);
+zathura_image_buffer_t* ps_page_render(zathura_page_t* page);
+bool ps_page_free(zathura_page_t* page);
+
+#endif // PS_H