mirror of
https://git.pwmt.org/pwmt/zathura.git
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216 lines
8 KiB
C
216 lines
8 KiB
C
/* See LICENSE file for license and copyright information */
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#include "print.h"
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#include "document.h"
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#include "render.h"
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#include "page.h"
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#include <girara/utils.h>
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#include <girara/statusbar.h>
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#include <girara/session.h>
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#include <glib/gi18n.h>
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static void cb_print_draw_page(GtkPrintOperation* print_operation,
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GtkPrintContext* context, gint page_number,
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zathura_t* zathura);
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static void cb_print_end(GtkPrintOperation* print_operation, GtkPrintContext*
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context, zathura_t* zathura);
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static void cb_print_request_page_setup(GtkPrintOperation* print_operation,
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GtkPrintContext* context,
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gint page_number, GtkPageSetup* setup,
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zathura_t* zathura);
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static void cb_print_done(GtkPrintOperation* operation,
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GtkPrintOperationResult result, zathura_t* zathura);
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void
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print(zathura_t* zathura)
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{
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g_return_if_fail(zathura != NULL);
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g_return_if_fail(zathura->document != NULL);
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GtkPrintOperation* print_operation = gtk_print_operation_new();
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/* print operation settings */
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gtk_print_operation_set_job_name(print_operation, zathura_document_get_path(zathura->document));
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gtk_print_operation_set_allow_async(print_operation, TRUE);
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gtk_print_operation_set_n_pages(print_operation, zathura_document_get_number_of_pages(zathura->document));
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gtk_print_operation_set_current_page(print_operation, zathura_document_get_current_page_number(zathura->document));
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gtk_print_operation_set_use_full_page(print_operation, TRUE);
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if (zathura->print.settings != NULL) {
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gtk_print_operation_set_print_settings(print_operation,
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zathura->print.settings);
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}
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if (zathura->print.page_setup != NULL) {
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gtk_print_operation_set_default_page_setup(print_operation,
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zathura->print.page_setup);
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}
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gtk_print_operation_set_embed_page_setup(print_operation, TRUE);
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/* print operation signals */
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g_signal_connect(print_operation, "draw-page", G_CALLBACK(cb_print_draw_page), zathura);
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g_signal_connect(print_operation, "end-print", G_CALLBACK(cb_print_end), zathura);
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g_signal_connect(print_operation, "request-page-setup", G_CALLBACK(cb_print_request_page_setup), zathura);
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g_signal_connect(print_operation, "done", G_CALLBACK(cb_print_done), zathura);
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/* print */
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GError* error = NULL;
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GtkPrintOperationResult result = gtk_print_operation_run(print_operation,
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GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
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NULL, &error);
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if (result == GTK_PRINT_OPERATION_RESULT_ERROR) {
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girara_notify(zathura->ui.session, GIRARA_ERROR, _("Printing failed: %s"),
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error->message);
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g_error_free(error);
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}
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g_object_unref(print_operation);
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}
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static void
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cb_print_end(GtkPrintOperation* UNUSED(print_operation), GtkPrintContext*
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UNUSED(context), zathura_t* zathura)
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{
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if (zathura == NULL || zathura->ui.session == NULL ||
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zathura->document == NULL) {
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return;
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}
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const char* file_path = zathura_document_get_path(zathura->document);
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if (file_path != NULL) {
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girara_statusbar_item_set_text(zathura->ui.session,
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zathura->ui.statusbar.file, file_path);
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}
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}
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static void
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cb_print_draw_page(GtkPrintOperation* print_operation, GtkPrintContext*
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context, gint page_number, zathura_t* zathura)
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{
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if (context == NULL || zathura == NULL || zathura->document == NULL ||
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zathura->ui.session == NULL || zathura->ui.statusbar.file == NULL) {
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gtk_print_operation_cancel(print_operation);
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return;
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}
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/* Update statusbar. */
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char* tmp = g_strdup_printf("Printing %d...", page_number);
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girara_statusbar_item_set_text(zathura->ui.session,
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zathura->ui.statusbar.file, tmp);
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g_free(tmp);
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/* Get the page and cairo handle. */
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cairo_t* cairo = gtk_print_context_get_cairo_context(context);
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zathura_page_t* page = zathura_document_get_page(zathura->document, page_number);
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if (cairo == NULL || page == NULL) {
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gtk_print_operation_cancel(print_operation);
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return;
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}
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/* Try to render the page without a temporary surface. This only works with
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* plugins that support rendering to any surface. */
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girara_debug("printing page %d ...", page_number);
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zathura_renderer_lock(zathura->sync.render_thread);
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int err = zathura_page_render(page, cairo, true);
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zathura_renderer_unlock(zathura->sync.render_thread);
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if (err == ZATHURA_ERROR_OK) {
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return;
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}
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/* Try to render the page on a temporary image surface. */
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const gdouble width = gtk_print_context_get_width(context);
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const gdouble height = gtk_print_context_get_height(context);
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/* Render to a surface that is 5 times larger to workaround quality issues. */
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const double page_height = zathura_page_get_height(page) * 5;
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const double page_width = zathura_page_get_width(page) * 5;
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cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, page_width, page_height);
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if (surface == NULL) {
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gtk_print_operation_cancel(print_operation);
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return;
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}
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cairo_t* temp_cairo = cairo_create(surface);
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if (cairo == NULL) {
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gtk_print_operation_cancel(print_operation);
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cairo_surface_destroy(surface);
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return;
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}
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/* Draw a white background. */
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cairo_save(temp_cairo);
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cairo_set_source_rgb(temp_cairo, 1, 1, 1);
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cairo_rectangle(temp_cairo, 0, 0, page_width, page_height);
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cairo_fill(temp_cairo);
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cairo_restore(temp_cairo);
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/* Render the page to the temporary surface */
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girara_debug("printing page %d (fallback) ...", page_number);
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zathura_renderer_lock(zathura->sync.render_thread);
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err = zathura_page_render(page, temp_cairo, true);
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zathura_renderer_unlock(zathura->sync.render_thread);
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if (err != ZATHURA_ERROR_OK) {
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cairo_destroy(temp_cairo);
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cairo_surface_destroy(surface);
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gtk_print_operation_cancel(print_operation);
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return;
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}
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/* Rescale the page and keep the aspect ratio */
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const gdouble scale = MIN(width / page_width, height / page_height);
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cairo_scale(cairo, scale, scale);
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/* Blit temporary surface to original cairo object. */
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cairo_set_source_surface(cairo, surface, 0.0, 0.0);
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cairo_paint(cairo);
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cairo_destroy(temp_cairo);
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cairo_surface_destroy(surface);
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}
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static void
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cb_print_request_page_setup(GtkPrintOperation* UNUSED(print_operation),
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GtkPrintContext* UNUSED(context), gint page_number,
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GtkPageSetup* setup, zathura_t* zathura)
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{
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if (zathura == NULL || zathura->document == NULL) {
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return;
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}
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zathura_page_t* page = zathura_document_get_page(zathura->document, page_number);
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double width = zathura_page_get_width(page);
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double height = zathura_page_get_height(page);
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if (width > height) {
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gtk_page_setup_set_orientation(setup, GTK_PAGE_ORIENTATION_LANDSCAPE);
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} else {
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gtk_page_setup_set_orientation(setup, GTK_PAGE_ORIENTATION_PORTRAIT);
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}
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}
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static void
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cb_print_done(GtkPrintOperation* operation, GtkPrintOperationResult result,
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zathura_t* zathura)
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{
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if (result == GTK_PRINT_OPERATION_RESULT_APPLY) {
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if (zathura->print.settings != NULL) {
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g_object_unref(zathura->print.settings);
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}
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if (zathura->print.page_setup != NULL) {
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g_object_unref(zathura->print.page_setup);
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}
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/* save previous settings */
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zathura->print.settings = g_object_ref(gtk_print_operation_get_print_settings(operation));
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zathura->print.page_setup = g_object_ref(gtk_print_operation_get_default_page_setup(operation));
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} else if (result == GTK_PRINT_OPERATION_RESULT_ERROR) {
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GError* error = NULL;
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gtk_print_operation_get_error(operation, &error);
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girara_notify(zathura->ui.session, GIRARA_ERROR, _("Printing failed: %s"),
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error->message);
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g_error_free(error);
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}
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}
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