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#include <gtk/gtk.h>
#include <cairo.h>
#include "gfio.h"
#include "cairo_text_helpers.h"
#include "printing.h"
static struct printing_parameters {
gdouble width, height, xdpi, ydpi;
GtkPrintSettings *settings;
GtkPageSetup *page_setup;
} print_params = { 0 };
static void begin_print(GtkPrintOperation *operation,
GtkPrintContext *context, gpointer data)
{
print_params.page_setup = gtk_print_context_get_page_setup(context);
print_params.width = gtk_print_context_get_width(context);
print_params.height = gtk_print_context_get_height(context);
print_params.xdpi = gtk_print_context_get_dpi_x(context);
print_params.ydpi = gtk_print_context_get_dpi_y(context);
/* assume 1 page for now. */
gtk_print_operation_set_n_pages(operation, 1);
}
static void results_draw_page(GtkPrintOperation *operation,
GtkPrintContext *context, gint page_nr,
gpointer data)
{
cairo_t *cr;
char str[32];
double x, y;
cr = gtk_print_context_get_cairo_context(context);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_set_line_width(cr, 5.0);
cairo_move_to(cr, 0.0, 0.0);
cairo_line_to(cr, print_params.width, print_params.height);
cairo_move_to(cr, 0.0, print_params.height);
cairo_line_to(cr, print_params.width, 0.0);
cairo_stroke(cr);
x = print_params.width / 4.0;
y = print_params.height / 5.0;
sprintf(str, "(%g,%g)", x, y);
draw_right_justified_text(cr, "Sans", x, y, 12.0, str);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_set_line_width(cr, 2.0);
cairo_move_to(cr, x, y - 30.0);
cairo_line_to(cr, x, y + 30.0);
cairo_move_to(cr, x - 30, y);
cairo_line_to(cr, x + 30, y);
y *= 4.0;
x *= 2.0;
sprintf(str, "(%g,%g)", x, y);
draw_right_justified_text(cr, "Sans", x, y, 12.0, str);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_set_line_width(cr, 2.0);
cairo_move_to(cr, x, y - 30.0);
cairo_line_to(cr, x, y + 30.0);
cairo_move_to(cr, x - 30, y);
cairo_line_to(cr, x + 30, y);
cairo_stroke(cr);
}
static void printing_error_dialog(GtkWidget *window, GError *print_error)
{
GtkWidget *error_dialog;
printf("printing_error_dialog called\n");
printf("error message = %s\n", print_error->message);
error_dialog = gtk_message_dialog_new(GTK_WINDOW(window),
GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE, "Print error:\n%s",
print_error->message);
g_signal_connect(error_dialog, "response",
G_CALLBACK(gtk_widget_destroy), NULL);
gtk_widget_show(error_dialog);
}
static void results_print_done(GtkPrintOperation *operation,
GtkPrintOperationResult result, gpointer data)
{
GError *print_error;
struct gui_entry *ge = data;
if (result != GTK_PRINT_OPERATION_RESULT_ERROR)
return;
gtk_print_operation_get_error(operation, &print_error);
printing_error_dialog(ge->results_window, print_error);
g_error_free(print_error);
}
void gfio_print_results(struct gui_entry *ge)
{
GtkPrintOperation *print;
GtkPrintOperationResult res;
GError *print_error;
print = gtk_print_operation_new();
if (print_params.settings != NULL)
gtk_print_operation_set_print_settings(print, print_params.settings);
if (print_params.page_setup != NULL)
gtk_print_operation_set_default_page_setup(print, print_params.page_setup);
g_signal_connect(print, "begin_print", G_CALLBACK(begin_print), NULL);
g_signal_connect(print, "draw_page", G_CALLBACK(results_draw_page), NULL);
g_signal_connect(print, "done", G_CALLBACK(results_print_done), NULL);
gtk_print_operation_set_allow_async(print, TRUE);
res = gtk_print_operation_run(print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
GTK_WINDOW(ge->results_window), &print_error);
/*
* Something's not quite right about the error handling. If I print
* to a file, and the file exists, and I don't have write permission
* on that file but attempt to replace it anyway, then it just kind of
* hangs and I don't get into any of this error handling stuff at all,
* neither here, nor in results_print_done().
*/
if (res == GTK_PRINT_OPERATION_RESULT_ERROR) {
printing_error_dialog(ge->results_window, print_error);
g_error_free(print_error);
} else {
if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
if (print_params.settings != NULL)
g_object_unref(print_params.settings);
print_params.settings = g_object_ref(gtk_print_operation_get_print_settings(print));
}
}
g_object_unref(print);
}
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