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Add a checkerboard toggle

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This commit is contained in:
Přemysl Eric Janouch 2021-12-20 11:08:36 +01:00
parent dfa1fed18b
commit f435252492
Signed by: p
GPG Key ID: A0420B94F92B9493
5 changed files with 160 additions and 8 deletions
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13
fastiv.c
View File

@ -56,7 +56,6 @@ exit_fatal(const gchar *format, ...)
// TODO(p): See if it's possible to give separators room to shrink
// by some minor amount of pixels, margin-wise.
// TODO(p): Add a toggle for a checkerboard background.
// TODO(p): Implement commented-out actions.
#define B make_toolbar_button
#define T make_toolbar_toggle
@ -84,6 +83,7 @@ exit_fatal(const gchar *format, ...)
/* XX(PIN, B("view-pin-symbolic", "Keep view configuration")) */ \
/* Or perhaps "blur-symbolic", also in the extended set. */ \
XX(SMOOTH, T("blend-tool-symbolic", "Smooth scaling")) \
XX(CHECKERBOARD, T("checkerboard-symbolic", "Highlight transparency")) \
/* XX(COLOR, B("preferences-color-symbolic", "Color management")) */ \
XX(SAVE, B("document-save-as-symbolic", "Save as...")) \
XX(PRINT, B("document-print-symbolic", "Print...")) \
@ -759,6 +759,7 @@ on_view_actions_changed(void)
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_FIT], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SMOOTH], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_CHECKERBOARD], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_SAVE], has_image);
gtk_widget_set_sensitive(g.toolbar[TOOLBAR_PRINT], has_image);
@ -902,6 +903,7 @@ make_view_toolbar(void)
toolbar_command(TOOLBAR_ONE, FIV_VIEW_COMMAND_ZOOM_1);
toolbar_toggler(TOOLBAR_FIT, "scale-to-fit");
toolbar_toggler(TOOLBAR_SMOOTH, "filter");
toolbar_toggler(TOOLBAR_CHECKERBOARD, "checkerboard");
toolbar_command(TOOLBAR_PRINT, FIV_VIEW_COMMAND_PRINT);
toolbar_command(TOOLBAR_SAVE, FIV_VIEW_COMMAND_SAVE_PAGE);
toolbar_command(TOOLBAR_LEFT, FIV_VIEW_COMMAND_ROTATE_LEFT);
@ -917,11 +919,14 @@ make_view_toolbar(void)
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_FIT]);
g_signal_connect(g.view, "notify::filter",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_SMOOTH]);
g_signal_connect(g.view, "notify::checkerboard",
G_CALLBACK(on_notify_view_boolean), g.toolbar[TOOLBAR_CHECKERBOARD]);
g_object_notify(G_OBJECT(g.view), "scale");
g_object_notify(G_OBJECT(g.view), "playing");
g_object_notify(G_OBJECT(g.view), "scale-to-fit");
g_object_notify(G_OBJECT(g.view), "filter");
g_object_notify(G_OBJECT(g.view), "checkerboard");
GCallback callback = G_CALLBACK(on_view_actions_changed);
g_signal_connect(g.view, "notify::has-image", callback, NULL);
@ -995,8 +1000,10 @@ main(int argc, char *argv[])
fiv-browser { padding: 5px; } \
fiv-browser.item { \
color: mix(#000, @content_view_bg, 0.625); margin: 8px; \
border: 2px solid #fff; background: @theme_bg_color; \
background-image: \
border: 2px solid #fff; \
} \
fiv-browser.item, fiv-view.checkerboard { \
background: @theme_bg_color; background-image: \
linear-gradient(45deg, @fiv-tile 26%, transparent 26%), \
linear-gradient(-45deg, @fiv-tile 26%, transparent 26%), \
linear-gradient(45deg, transparent 74%, @fiv-tile 74%), \

38
fiv-view.c
View File

@ -38,6 +38,7 @@ struct _FivView {
cairo_surface_t *frame; ///< Current frame within page, weak
FivIoOrientation orientation; ///< Current page orientation
bool filter; ///< Smooth scaling toggle
bool checkerboard; ///< Show checkerboard background
bool scale_to_fit; ///< Image no larger than the allocation
double scale; ///< Scaling factor
@ -88,6 +89,7 @@ enum {
PROP_SCALE = 1,
PROP_SCALE_TO_FIT,
PROP_FILTER,
PROP_CHECKERBOARD,
PROP_PLAYING,
PROP_HAS_IMAGE,
PROP_CAN_ANIMATE,
@ -122,6 +124,9 @@ fiv_view_get_property(
case PROP_FILTER:
g_value_set_boolean(value, self->filter);
break;
case PROP_CHECKERBOARD:
g_value_set_boolean(value, self->checkerboard);
break;
case PROP_PLAYING:
g_value_set_boolean(value, !!self->frame_update_connection);
break;
@ -158,6 +163,10 @@ fiv_view_set_property(
if (self->filter != g_value_get_boolean(value))
fiv_view_command(self, FIV_VIEW_COMMAND_TOGGLE_FILTER);
break;
case PROP_CHECKERBOARD:
if (self->checkerboard != g_value_get_boolean(value))
fiv_view_command(self, FIV_VIEW_COMMAND_TOGGLE_CHECKERBOARD);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
}
@ -356,8 +365,8 @@ fiv_view_draw(GtkWidget *widget, cairo_t *cr)
// which makes the widget have no double buffering or default background.
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
gtk_render_background(gtk_widget_get_style_context(widget), cr, 0, 0,
allocation.width, allocation.height);
GtkStyleContext *style = gtk_widget_get_style_context(widget);
gtk_render_background(style, cr, 0, 0, allocation.width, allocation.height);
FivView *self = FIV_VIEW(widget);
if (!self->image ||
@ -376,10 +385,17 @@ fiv_view_draw(GtkWidget *widget, cairo_t *cr)
if (h < allocation.height)
y = round((allocation.height - h) / 2.);
// FIXME: Recording surfaces do not work well with CAIRO_SURFACE_TYPE_XLIB,
// we always get a shitty pixmap, where transparency contains junk.
cairo_matrix_t matrix = get_orientation_matrix(self->orientation, sw, sh);
cairo_translate(cr, x, y);
if (self->checkerboard) {
gtk_style_context_save(style);
gtk_style_context_add_class(style, "checkerboard");
gtk_render_background(style, cr, 0, 0, w, h);
gtk_style_context_restore(style);
}
// FIXME: Recording surfaces do not work well with CAIRO_SURFACE_TYPE_XLIB,
// we always get a shitty pixmap, where transparency contains junk.
if (cairo_surface_get_type(self->frame) == CAIRO_SURFACE_TYPE_RECORDING) {
cairo_surface_t *image =
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
@ -804,6 +820,8 @@ fiv_view_key_press_event(GtkWidget *widget, GdkEventKey *event)
return command(self, FIV_VIEW_COMMAND_TOGGLE_SCALE_TO_FIT);
case GDK_KEY_i:
return command(self, FIV_VIEW_COMMAND_TOGGLE_FILTER);
case GDK_KEY_t:
return command(self, FIV_VIEW_COMMAND_TOGGLE_CHECKERBOARD);
case GDK_KEY_less:
return command(self, FIV_VIEW_COMMAND_ROTATE_LEFT);
@ -844,6 +862,9 @@ fiv_view_class_init(FivViewClass *klass)
view_properties[PROP_FILTER] = g_param_spec_boolean(
"filter", "Use filtering", "Scale images smoothly",
TRUE, G_PARAM_READWRITE);
view_properties[PROP_CHECKERBOARD] = g_param_spec_boolean(
"checkerboard", "Show checkerboard", "Highlight transparent background",
TRUE, G_PARAM_READWRITE);
view_properties[PROP_PLAYING] = g_param_spec_boolean(
"playing", "Playing animation", "An animation is running",
FALSE, G_PARAM_READABLE);
@ -885,6 +906,7 @@ fiv_view_init(FivView *self)
gtk_widget_set_can_focus(GTK_WIDGET(self), TRUE);
self->filter = true;
self->checkerboard = false;
self->scale = 1.0;
}
@ -975,7 +997,13 @@ fiv_view_command(FivView *self, FivViewCommand command)
break; case FIV_VIEW_COMMAND_TOGGLE_FILTER:
self->filter = !self->filter;
g_object_notify_by_pspec(G_OBJECT(self), view_properties[PROP_FILTER]);
g_object_notify_by_pspec(
G_OBJECT(self), view_properties[PROP_FILTER]);
gtk_widget_queue_draw(widget);
break; case FIV_VIEW_COMMAND_TOGGLE_CHECKERBOARD:
self->checkerboard = !self->checkerboard;
g_object_notify_by_pspec(
G_OBJECT(self), view_properties[PROP_CHECKERBOARD]);
gtk_widget_queue_draw(widget);
break; case FIV_VIEW_COMMAND_PRINT:
print(self);

1
fiv-view.h
View File

@ -42,6 +42,7 @@ typedef enum _FivViewCommand {
FIV_VIEW_COMMAND_TOGGLE_PLAYBACK,
FIV_VIEW_COMMAND_TOGGLE_FILTER,
FIV_VIEW_COMMAND_TOGGLE_CHECKERBOARD,
FIV_VIEW_COMMAND_PRINT,
FIV_VIEW_COMMAND_SAVE_PAGE,

115
resources/checkerboard-symbolic.svg Normal file
View File

@ -0,0 +1,115 @@
<?xml version="1.0" encoding="UTF-8"?>
<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<filter id="a" height="100%" width="100%" x="0%" y="0%">
<feColorMatrix in="SourceGraphic" type="matrix" values="0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0"/>
</filter>
<mask id="b">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.3"/>
</g>
</mask>
<clipPath id="c">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="d">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
</g>
</mask>
<clipPath id="e">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="f">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
</g>
</mask>
<clipPath id="g">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="h">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
</g>
</mask>
<clipPath id="i">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="j">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
</g>
</mask>
<clipPath id="k">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="l">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
</g>
</mask>
<clipPath id="m">
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</clipPath>
<mask id="n">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.05"/>
</g>
</mask>
<clipPath id="o">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="p">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.3"/>
</g>
</mask>
<clipPath id="q">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<mask id="r">
<g filter="url(#a)">
<path d="m 0 0 h 16 v 16 h -16 z" fill-opacity="0.5"/>
</g>
</mask>
<clipPath id="s">
<path d="m 0 0 h 1600 v 1200 h -1600 z"/>
</clipPath>
<g clip-path="url(#c)" mask="url(#b)" transform="matrix(1 0 0 1 -256 -756)">
<path d="m 562.460938 212.058594 h 10.449218 c -1.183594 0.492187 -1.296875 2.460937 0 3 h -10.449218 z m 0 0" fill="#2e3436"/>
</g>
<g clip-path="url(#e)" mask="url(#d)" transform="matrix(1 0 0 1 -256 -756)">
<path d="m 16 748 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
</g>
<g clip-path="url(#g)" mask="url(#f)" transform="matrix(1 0 0 1 -256 -756)">
<path d="m 17 747 h 1 v 1 h -1 z m 0 0" fill="#2e3436" fill-rule="evenodd"/>
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<path d="m 136 776 v 7 h 7 v -7 z m 0 0" fill="#2e3436"/>
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<g clip-path="url(#s)" mask="url(#r)" transform="matrix(1 0 0 1 -256 -756)">
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<g fill="#2e3436">
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</g>
</svg>
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1
resources/resources.gresource.xml
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@ -4,5 +4,6 @@
<file preprocess="xml-stripblanks">circle-filled-symbolic.svg</file>
<file preprocess="xml-stripblanks">funnel-symbolic.svg</file>
<file preprocess="xml-stripblanks">blend-tool-symbolic.svg</file>
<file preprocess="xml-stripblanks">checkerboard-symbolic.svg</file>
</gresource>
</gresources>