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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 | ||
5570ec6a JA |
29 | static void results_draw_page(GtkPrintOperation *operation, |
30 | GtkPrintContext *context, gint page_nr, | |
31 | gpointer data) | |
bf3f7027 SC |
32 | { |
33 | cairo_t *cr; | |
2a191682 | 34 | char str[32]; |
bf3f7027 SC |
35 | double x, y; |
36 | ||
37 | cr = gtk_print_context_get_cairo_context(context); | |
38 | ||
3c3ed070 JA |
39 | cairo_set_source_rgb(cr, 0, 0, 0); |
40 | cairo_set_line_width(cr, 5.0); | |
bf3f7027 SC |
41 | cairo_move_to(cr, 0.0, 0.0); |
42 | cairo_line_to(cr, print_params.width, print_params.height); | |
43 | cairo_move_to(cr, 0.0, print_params.height); | |
44 | cairo_line_to(cr, print_params.width, 0.0); | |
45 | cairo_stroke(cr); | |
46 | ||
47 | x = print_params.width / 4.0; | |
48 | y = print_params.height / 5.0; | |
49 | sprintf(str, "(%g,%g)", x, y); | |
50 | draw_right_justified_text(cr, "Sans", x, y, 12.0, str); | |
3c3ed070 JA |
51 | cairo_set_source_rgb(cr, 0, 0, 0); |
52 | cairo_set_line_width(cr, 2.0); | |
bf3f7027 SC |
53 | cairo_move_to(cr, x, y - 30.0); |
54 | cairo_line_to(cr, x, y + 30.0); | |
55 | cairo_move_to(cr, x - 30, y); | |
56 | cairo_line_to(cr, x + 30, y); | |
57 | ||
58 | y *= 4.0; | |
59 | x *= 2.0; | |
60 | sprintf(str, "(%g,%g)", x, y); | |
61 | draw_right_justified_text(cr, "Sans", x, y, 12.0, str); | |
3c3ed070 JA |
62 | cairo_set_source_rgb(cr, 0, 0, 0); |
63 | cairo_set_line_width(cr, 2.0); | |
bf3f7027 SC |
64 | cairo_move_to(cr, x, y - 30.0); |
65 | cairo_line_to(cr, x, y + 30.0); | |
66 | cairo_move_to(cr, x - 30, y); | |
67 | cairo_line_to(cr, x + 30, y); | |
68 | cairo_stroke(cr); | |
69 | } | |
70 | ||
71 | static void printing_error_dialog(GtkWidget *window, GError *print_error) | |
72 | { | |
73 | GtkWidget *error_dialog; | |
74 | ||
75 | printf("printing_error_dialog called\n"); | |
76 | printf("error message = %s\n", print_error->message); | |
77 | error_dialog = gtk_message_dialog_new(GTK_WINDOW(window), | |
78 | GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR, | |
79 | GTK_BUTTONS_CLOSE, "Print error:\n%s", | |
80 | print_error->message); | |
5570ec6a | 81 | g_signal_connect(error_dialog, "response", |
bf3f7027 SC |
82 | G_CALLBACK(gtk_widget_destroy), NULL); |
83 | gtk_widget_show(error_dialog); | |
84 | } | |
85 | ||
86 | static void results_print_done(GtkPrintOperation *operation, | |
87 | GtkPrintOperationResult result, gpointer data) | |
88 | { | |
89 | GError *print_error; | |
90 | struct gui_entry *ge = data; | |
91 | ||
92 | if (result != GTK_PRINT_OPERATION_RESULT_ERROR) | |
93 | return; | |
94 | ||
95 | gtk_print_operation_get_error(operation, &print_error); | |
96 | printing_error_dialog(ge->results_window, print_error); | |
97 | g_error_free(print_error); | |
98 | } | |
99 | ||
100 | void gfio_print_results(struct gui_entry *ge) | |
101 | { | |
102 | GtkPrintOperation *print; | |
103 | GtkPrintOperationResult res; | |
104 | GError *print_error; | |
105 | ||
106 | print = gtk_print_operation_new(); | |
107 | if (print_params.settings != NULL) | |
108 | gtk_print_operation_set_print_settings(print, print_params.settings); | |
109 | ||
110 | if (print_params.page_setup != NULL) | |
111 | gtk_print_operation_set_default_page_setup(print, print_params.page_setup); | |
112 | ||
113 | g_signal_connect(print, "begin_print", G_CALLBACK(begin_print), NULL); | |
114 | g_signal_connect(print, "draw_page", G_CALLBACK(results_draw_page), NULL); | |
115 | g_signal_connect(print, "done", G_CALLBACK(results_print_done), NULL); | |
116 | gtk_print_operation_set_allow_async(print, TRUE); | |
117 | res = gtk_print_operation_run(print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG, | |
118 | GTK_WINDOW(ge->results_window), &print_error); | |
119 | ||
120 | /* | |
121 | * Something's not quite right about the error handling. If I print | |
122 | * to a file, and the file exists, and I don't have write permission | |
123 | * on that file but attempt to replace it anyway, then it just kind of | |
124 | * hangs and I don't get into any of this error handling stuff at all, | |
125 | * neither here, nor in results_print_done(). | |
126 | */ | |
127 | ||
128 | if (res == GTK_PRINT_OPERATION_RESULT_ERROR) { | |
129 | printing_error_dialog(ge->results_window, print_error); | |
130 | g_error_free(print_error); | |
131 | } else { | |
132 | if (res == GTK_PRINT_OPERATION_RESULT_APPLY) { | |
133 | if (print_params.settings != NULL) | |
134 | g_object_unref(print_params.settings); | |
135 | print_params.settings = g_object_ref(gtk_print_operation_get_print_settings(print)); | |
136 | } | |
137 | } | |
138 | g_object_unref(print); | |
139 | } |