Commit | Line | Data |
---|---|---|
bf3f7027 SC |
1 | #include <gtk/gtk.h> |
2 | #include <cairo.h> | |
3 | ||
4 | #include "gfio.h" | |
5 | #include "cairo_text_helpers.h" | |
6 | #include "printing.h" | |
7 | ||
8 | ||
9 | static struct printing_parameters { | |
10 | gdouble width, height, xdpi, ydpi; | |
11 | GtkPrintSettings *settings; | |
12 | GtkPageSetup *page_setup; | |
13 | } print_params = { 0 }; | |
14 | ||
15 | static void begin_print(GtkPrintOperation *operation, | |
16 | GtkPrintContext *context, gpointer data) | |
17 | { | |
18 | print_params.page_setup = gtk_print_context_get_page_setup(context); | |
19 | ||
20 | print_params.width = gtk_print_context_get_width(context); | |
21 | print_params.height = gtk_print_context_get_height(context); | |
22 | print_params.xdpi = gtk_print_context_get_dpi_x(context); | |
23 | print_params.ydpi = gtk_print_context_get_dpi_y(context); | |
24 | ||
25 | /* assume 1 page for now. */ | |
26 | gtk_print_operation_set_n_pages(operation, 1); | |
27 | } | |
28 | ||
29 | static void results_draw_page(GtkPrintOperation *operation, GtkPrintContext *context, | |
30 | gint page_nr, gpointer data) | |
31 | { | |
32 | cairo_t *cr; | |
33 | char str[20]; | |
34 | double x, y; | |
35 | ||
36 | cr = gtk_print_context_get_cairo_context(context); | |
37 | ||
38 | cairo_set_source_rgb(cr, 0, 0, 0); | |
39 | cairo_set_line_width (cr, 5.0); | |
40 | cairo_move_to(cr, 0.0, 0.0); | |
41 | cairo_line_to(cr, print_params.width, print_params.height); | |
42 | cairo_move_to(cr, 0.0, print_params.height); | |
43 | cairo_line_to(cr, print_params.width, 0.0); | |
44 | cairo_stroke(cr); | |
45 | ||
46 | x = print_params.width / 4.0; | |
47 | y = print_params.height / 5.0; | |
48 | sprintf(str, "(%g,%g)", x, y); | |
49 | draw_right_justified_text(cr, "Sans", x, y, 12.0, str); | |
50 | cairo_set_source_rgb(cr, 0, 0, 0); | |
51 | cairo_set_line_width (cr, 2.0); | |
52 | cairo_move_to(cr, x, y - 30.0); | |
53 | cairo_line_to(cr, x, y + 30.0); | |
54 | cairo_move_to(cr, x - 30, y); | |
55 | cairo_line_to(cr, x + 30, y); | |
56 | ||
57 | y *= 4.0; | |
58 | x *= 2.0; | |
59 | sprintf(str, "(%g,%g)", x, y); | |
60 | draw_right_justified_text(cr, "Sans", x, y, 12.0, str); | |
61 | cairo_set_source_rgb(cr, 0, 0, 0); | |
62 | cairo_set_line_width (cr, 2.0); | |
63 | cairo_move_to(cr, x, y - 30.0); | |
64 | cairo_line_to(cr, x, y + 30.0); | |
65 | cairo_move_to(cr, x - 30, y); | |
66 | cairo_line_to(cr, x + 30, y); | |
67 | cairo_stroke(cr); | |
68 | } | |
69 | ||
70 | static void printing_error_dialog(GtkWidget *window, GError *print_error) | |
71 | { | |
72 | GtkWidget *error_dialog; | |
73 | ||
74 | printf("printing_error_dialog called\n"); | |
75 | printf("error message = %s\n", print_error->message); | |
76 | error_dialog = gtk_message_dialog_new(GTK_WINDOW(window), | |
77 | GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, | |
78 | GTK_BUTTONS_CLOSE, "Print error:\n%s", | |
79 | print_error->message); | |
80 | g_signal_connect(error_dialog, "response", | |
81 | G_CALLBACK(gtk_widget_destroy), NULL); | |
82 | gtk_widget_show(error_dialog); | |
83 | } | |
84 | ||
85 | static void results_print_done(GtkPrintOperation *operation, | |
86 | GtkPrintOperationResult result, gpointer data) | |
87 | { | |
88 | GError *print_error; | |
89 | struct gui_entry *ge = data; | |
90 | ||
91 | if (result != GTK_PRINT_OPERATION_RESULT_ERROR) | |
92 | return; | |
93 | ||
94 | gtk_print_operation_get_error(operation, &print_error); | |
95 | printing_error_dialog(ge->results_window, print_error); | |
96 | g_error_free(print_error); | |
97 | } | |
98 | ||
99 | void gfio_print_results(struct gui_entry *ge) | |
100 | { | |
101 | GtkPrintOperation *print; | |
102 | GtkPrintOperationResult res; | |
103 | GError *print_error; | |
104 | ||
105 | print = gtk_print_operation_new(); | |
106 | if (print_params.settings != NULL) | |
107 | gtk_print_operation_set_print_settings(print, print_params.settings); | |
108 | ||
109 | if (print_params.page_setup != NULL) | |
110 | gtk_print_operation_set_default_page_setup(print, print_params.page_setup); | |
111 | ||
112 | g_signal_connect(print, "begin_print", G_CALLBACK(begin_print), NULL); | |
113 | g_signal_connect(print, "draw_page", G_CALLBACK(results_draw_page), NULL); | |
114 | g_signal_connect(print, "done", G_CALLBACK(results_print_done), NULL); | |
115 | gtk_print_operation_set_allow_async(print, TRUE); | |
116 | res = gtk_print_operation_run(print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG, | |
117 | GTK_WINDOW(ge->results_window), &print_error); | |
118 | ||
119 | /* | |
120 | * Something's not quite right about the error handling. If I print | |
121 | * to a file, and the file exists, and I don't have write permission | |
122 | * on that file but attempt to replace it anyway, then it just kind of | |
123 | * hangs and I don't get into any of this error handling stuff at all, | |
124 | * neither here, nor in results_print_done(). | |
125 | */ | |
126 | ||
127 | if (res == GTK_PRINT_OPERATION_RESULT_ERROR) { | |
128 | printing_error_dialog(ge->results_window, print_error); | |
129 | g_error_free(print_error); | |
130 | } else { | |
131 | if (res == GTK_PRINT_OPERATION_RESULT_APPLY) { | |
132 | if (print_params.settings != NULL) | |
133 | g_object_unref(print_params.settings); | |
134 | print_params.settings = g_object_ref(gtk_print_operation_get_print_settings(print)); | |
135 | } | |
136 | } | |
137 | g_object_unref(print); | |
138 | } |