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Diffstat (limited to 'src/testcard.c')
| -rw-r--r-- | src/testcard.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/src/testcard.c b/src/testcard.c new file mode 100644 index 0000000..2975187 --- /dev/null +++ b/src/testcard.c @@ -0,0 +1,288 @@ +/* + * testcard.c + * + * Copyright © 2013-2019 Thomas White <taw@bitwiz.org.uk> + * + * This file is part of Colloquium. + * + * Colloquium is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <gtk/gtk.h> +#include <gdk/gdkkeysyms.h> +#include <libintl.h> +#define _(x) gettext(x) + +#include <presentation.h> + + +struct testcard +{ + GtkWidget *window; + char geom[256]; + double slide_width; + double slide_height; + GtkWidget *drawingarea; +}; + +static gint tc_destroy_sig(GtkWidget *widget, struct testcard *tc) +{ + free(tc); + return FALSE; +} + + +static void arrow_left(cairo_t *cr, double size) +{ + cairo_rel_line_to(cr, size, size); + cairo_rel_line_to(cr, 0.0, -2*size); + cairo_rel_line_to(cr, -size, size); +} + + +static void arrow_right(cairo_t *cr, double size) +{ + cairo_rel_line_to(cr, -size, size); + cairo_rel_line_to(cr, 0.0, -2*size); + cairo_rel_line_to(cr, size, size); +} + + +static void arrow_down(cairo_t *cr, double size) +{ + cairo_rel_line_to(cr, -size, -size); + cairo_rel_line_to(cr, 2*size, 0.0); + cairo_rel_line_to(cr, -size, size); +} + + +static void arrow_up(cairo_t *cr, double size) +{ + cairo_rel_line_to(cr, -size, size); + cairo_rel_line_to(cr, 2*size, 0.0); + cairo_rel_line_to(cr, -size, -size); +} + + +static void colour_box(cairo_t *cr, double x, double y, + double r, double g, double b, const char *label) +{ + const double w = 50.0; + const double h = 50.0; + cairo_text_extents_t size; + + cairo_rectangle(cr, x+0.5, y+0.5, w, h); + cairo_set_source_rgb(cr, r, g, b); + cairo_fill_preserve(cr); + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_set_line_width(cr, 1.0); + cairo_stroke(cr); + + cairo_set_font_size(cr, 24.0); + cairo_text_extents(cr, label, &size); + cairo_move_to(cr, x+(w/2.0)-(size.width/2.0), y-10.0); + cairo_show_text(cr, label); + +} + + +static gboolean tc_draw_sig(GtkWidget *da, cairo_t *cr, struct testcard *tc) +{ + double xoff, yoff; + double width, height; + double w, h; + PangoLayout *pl; + PangoFontDescription *desc; + char tmp[1024]; + int plw, plh; + double xp, yp; + + width = gtk_widget_get_allocated_width(GTK_WIDGET(da)); + height = gtk_widget_get_allocated_height(GTK_WIDGET(da)); + + /* Overall background */ + cairo_rectangle(cr, 0.0, 0.0, width, height); + cairo_set_source_rgb(cr, 0.0, 0.0, 1.0); + cairo_fill(cr); + + if ( tc->slide_width/tc->slide_height < width/height ) { + w = (tc->slide_width / tc->slide_height) * height; + h = height; + } else { + w = width; + h = (tc->slide_height / tc->slide_width) * width; + } + + /* Get the overall size */ + xoff = (width - w)/2.0; + yoff = (height - h)/2.0; + + /* Background of slide */ + cairo_rectangle(cr, xoff, yoff, w, h); + cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); + cairo_fill(cr); + + cairo_rectangle(cr, xoff+10.5, yoff+10.5, w-20.0, h-20.0); + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_set_line_width(cr, 1.0); + cairo_stroke(cr); + + /* Arrows showing edges of screen */ + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_move_to(cr, 0.0, height/2); + arrow_left(cr, 100.0); + cairo_fill(cr); + cairo_move_to(cr, width, height/2); + arrow_right(cr, 100.0); + cairo_fill(cr); + cairo_move_to(cr, width/2, height); + arrow_down(cr, 100.0); + cairo_fill(cr); + cairo_move_to(cr, width/2, 0.0); + arrow_up(cr, 100.0); + cairo_fill(cr); + + /* Arrows showing edges of slide */ + cairo_translate(cr, xoff, yoff); + cairo_set_source_rgb(cr, 0.5, 0.0, 0.0); + cairo_move_to(cr, 0.0, 100+h/2); + arrow_left(cr, 80.0); + cairo_fill(cr); + cairo_move_to(cr, w, 100+h/2); + arrow_right(cr, 80.0); + cairo_fill(cr); + cairo_move_to(cr, 100+w/2, h); + arrow_down(cr, 80.0); + cairo_fill(cr); + cairo_move_to(cr, 100+w/2, 0.0); + arrow_up(cr, 80.0); + cairo_fill(cr); + + cairo_rectangle(cr, 10.5, 10.5, w-20.0, h-20.0); + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + cairo_set_line_width(cr, 1.0); + cairo_stroke(cr); + + /* Stuff in the middle */ + yp = (h-400)/2.0; + cairo_save(cr); + cairo_translate(cr, 0.0, yp); + + snprintf(tmp, 1024, _("Test Card\nColloquium version %s\n" + "Screen resolution %.0f × %.0f\n" + "Slide resolution %.0f × %.0f"), + PACKAGE_VERSION, width, height, + w, h); + + pl = pango_cairo_create_layout(cr); + desc = pango_font_description_from_string("Sans 24"); + pango_layout_set_font_description(pl, desc); + pango_layout_set_text(pl, tmp, -1); + + pango_layout_get_size(pl, &plw, &plh); + plw = pango_units_to_double(plw); + plh = pango_units_to_double(plh); + cairo_move_to(cr, (w-plw)/2, 0.0); + cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); + pango_cairo_show_layout(cr, pl); + + /* Colour boxes */ + xp = (w-450)/2.0; + colour_box(cr, xp+0, 200, 1.0, 0.0, 0.0, _("Red")); + colour_box(cr, xp+80, 200, 0.0, 1.0, 0.0, _("Green")); + colour_box(cr, xp+160, 200, 0.0, 0.0, 1.0, _("Blue")); + colour_box(cr, xp+240, 200, 1.0, 1.0, 0.0, _("Yellow")); + colour_box(cr, xp+320, 200, 1.0, 0.0, 1.0, _("Pink")); + colour_box(cr, xp+400, 200, 0.0, 1.0, 1.0, _("Cyan")); + + /* Shades of grey */ + double i; + for ( i=0; i<=1.0; i+=0.2 ) { + char label[32]; + snprintf(label, 31, "%.0f%%", i*100.0); + colour_box(cr, xp+(i*5*80), 300, i, i, i, label); + } + cairo_restore(cr); + + return FALSE; +} + + +static gboolean tc_key_press_sig(GtkWidget *da, GdkEventKey *event, + struct testcard *tc) +{ + if ( !event->is_modifier ) gtk_widget_destroy(tc->window); + return FALSE; +} + + +void show_testcard(Presentation *p) +{ + GdkDisplay *display; + int n_monitors; + struct testcard *tc; + + tc = calloc(1, sizeof(struct testcard)); + if ( tc == NULL ) return; + + tc->window = gtk_window_new(GTK_WINDOW_TOPLEVEL); + stylesheet_get_slide_default_size(presentation_get_stylesheet(p), + &tc->slide_width, &tc->slide_height); + + tc->drawingarea = gtk_drawing_area_new(); + gtk_container_add(GTK_CONTAINER(tc->window), tc->drawingarea); + + gtk_widget_set_can_focus(GTK_WIDGET(tc->drawingarea), TRUE); + gtk_widget_add_events(GTK_WIDGET(tc->drawingarea), GDK_KEY_PRESS_MASK); + + g_signal_connect(G_OBJECT(tc->drawingarea), "key-press-event", + G_CALLBACK(tc_key_press_sig), tc); + g_signal_connect(G_OBJECT(tc->window), "destroy", + G_CALLBACK(tc_destroy_sig), tc); + g_signal_connect(G_OBJECT(tc->drawingarea), "draw", + G_CALLBACK(tc_draw_sig), tc); + + gtk_widget_grab_focus(GTK_WIDGET(tc->drawingarea)); + + display = gdk_display_get_default(); + n_monitors = gdk_display_get_n_monitors(display); + + GdkMonitor *mon_ss; + if ( n_monitors == 1 ) { + mon_ss = gdk_display_get_primary_monitor(display); + printf(_("Single monitor mode\n")); + } else { + mon_ss = gdk_display_get_monitor(display, 1); + printf(_("Dual monitor mode\n")); + } + + /* Workaround because gtk_window_fullscreen_on_monitor doesn't work */ + GdkRectangle rect; + gdk_monitor_get_geometry(mon_ss, &rect); + gtk_window_move(GTK_WINDOW(tc->window), rect.x, rect.y); + gtk_window_fullscreen(GTK_WINDOW(tc->window)); + + gtk_widget_show_all(GTK_WIDGET(tc->window)); + +} + |