forked from AuroraMiddleware/gtk
gtk-demo: Font rendering - add outlines
Should outlines as well.
This commit is contained in:
Matthias Clasen
parent
24d69ef125
commit
c7215d1199
@ -17,10 +17,12 @@ static GtkWidget *down_button = NULL;
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static GtkWidget *text_radio = NULL;
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static GtkWidget *show_grid = NULL;
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static GtkWidget *show_extents = NULL;
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static GtkWidget *show_pixels = NULL;
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static GtkWidget *show_outlines = NULL;
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static PangoContext *context;
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static int scale = 9;
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static int scale = 7;
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static void
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update_image (void)
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@ -39,6 +41,7 @@ update_image (void)
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cairo_hint_style_t hintstyle;
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cairo_hint_metrics_t hintmetrics;
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cairo_antialias_t antialias;
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cairo_path_t *path;
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if (!context)
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context = gtk_widget_create_pango_context (image);
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@ -94,10 +97,22 @@ update_image (void)
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 0, 0, 0);
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if (gtk_check_button_get_active (GTK_CHECK_BUTTON (show_pixels)))
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{
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if (gtk_check_button_get_active (GTK_CHECK_BUTTON (show_outlines)))
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cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
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else
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cairo_set_source_rgba (cr, 0, 0, 0, 1);
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}
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else
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cairo_set_source_rgba (cr, 0, 0, 0, 0);
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cairo_move_to (cr, 10, 10);
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pango_cairo_show_layout (cr, layout);
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pango_cairo_layout_path (cr, layout);
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path = cairo_copy_path (cr);
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cairo_destroy (cr);
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g_object_unref (layout);
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@ -136,7 +151,7 @@ update_image (void)
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if (gtk_check_button_get_active (GTK_CHECK_BUTTON (show_extents)))
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{
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cairo_set_source_rgba (cr, 0, 0, 1, 1);
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cairo_set_source_rgb (cr, 0, 0, 1);
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cairo_rectangle (cr,
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scale * (10 + pango_units_to_double (logical.x)) - 0.5,
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@ -149,7 +164,7 @@ update_image (void)
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cairo_line_to (cr, scale * (10 + pango_units_to_double (logical.x + logical.width)) + 1,
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scale * (10 + pango_units_to_double (baseline)) - 0.5);
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cairo_stroke (cr);
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cairo_set_source_rgba (cr, 1, 0, 0, 1);
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cairo_set_source_rgb (cr, 1, 0, 0);
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cairo_rectangle (cr,
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scale * (10 + pango_units_to_double (pink.x)) + 0.5,
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scale * (10 + pango_units_to_double (pink.y)) + 0.5,
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@ -158,8 +173,39 @@ update_image (void)
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cairo_stroke (cr);
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}
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if (gtk_check_button_get_active (GTK_CHECK_BUTTON (show_outlines)))
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{
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for (int i = 0; i < path->num_data; i += path->data[i].header.length)
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{
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cairo_path_data_t *data = &path->data[i];
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switch (data->header.type)
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{
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case CAIRO_PATH_CURVE_TO:
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data[3].point.x *= scale; data[3].point.y *= scale;
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data[2].point.x *= scale; data[2].point.y *= scale;
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data[1].point.x *= scale; data[1].point.y *= scale;
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break;
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case CAIRO_PATH_LINE_TO:
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case CAIRO_PATH_MOVE_TO:
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data[1].point.x *= scale; data[1].point.y *= scale;
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break;
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case CAIRO_PATH_CLOSE_PATH:
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break;
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default:
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g_assert_not_reached ();
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}
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}
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cairo_set_source_rgba (cr, 0, 0, 1, 1);
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cairo_move_to (cr, scale * 20 - 0.5, scale * 20 - 0.5);
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cairo_append_path (cr, path);
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cairo_stroke (cr);
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}
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cairo_surface_destroy (surface);
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cairo_destroy (cr);
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cairo_path_destroy (path);
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}
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else
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{
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@ -281,6 +327,8 @@ do_fontrendering (GtkWidget *do_widget)
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text_radio = GTK_WIDGET (gtk_builder_get_object (builder, "text_radio"));
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show_grid = GTK_WIDGET (gtk_builder_get_object (builder, "show_grid"));
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show_extents = GTK_WIDGET (gtk_builder_get_object (builder, "show_extents"));
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show_pixels = GTK_WIDGET (gtk_builder_get_object (builder, "show_pixels"));
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show_outlines = GTK_WIDGET (gtk_builder_get_object (builder, "show_outlines"));
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g_signal_connect (up_button, "clicked", G_CALLBACK (scale_up), NULL);
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g_signal_connect (down_button, "clicked", G_CALLBACK (scale_down), NULL);
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@ -292,6 +340,8 @@ do_fontrendering (GtkWidget *do_widget)
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g_signal_connect (text_radio, "notify::active", G_CALLBACK (update_image), NULL);
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g_signal_connect (show_grid, "notify::active", G_CALLBACK (update_image), NULL);
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g_signal_connect (show_extents, "notify::active", G_CALLBACK (update_image), NULL);
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g_signal_connect (show_pixels, "notify::active", G_CALLBACK (update_image), NULL);
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g_signal_connect (show_outlines, "notify::active", G_CALLBACK (update_image), NULL);
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update_image ();
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@ -1,8 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<interface>
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<object class="GtkWindow" id="window">
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<property name="default-width">1080</property>
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<property name="default-height">430</property>
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<property name="default-width">1024</property>
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<property name="default-height">768</property>
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<child type="titlebar">
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<object class="GtkHeaderBar">
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<child type="title">
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@ -82,14 +82,51 @@
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</object>
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</child>
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<child>
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<object class="GtkLabel">
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<property name="label">Hinting</property>
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<property name="xalign">1</property>
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<style>
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<class name="dim-label"/>
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</style>
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<object class="GtkCheckButton" id="show_pixels">
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<property name="label">Show Pixels</property>
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<property name="active">1</property>
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<layout>
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<property name="column">3</property>
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<property name="row">0</property>
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</layout>
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</object>
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</child>
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<child>
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<object class="GtkCheckButton" id="show_outlines">
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<property name="label">Show Outline</property>
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<layout>
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<property name="column">3</property>
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<property name="row">1</property>
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</layout>
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</object>
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</child>
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<child>
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<object class="GtkBox">
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<property name="spacing">6</property>
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<child>
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<object class="GtkLabel">
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<property name="label">Hinting</property>
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<property name="xalign">1</property>
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<style>
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<class name="dim-label"/>
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</style>
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</object>
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</child>
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<child>
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<object class="GtkComboBoxText" id="hinting">
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<property name="active">0</property>
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<property name="valign">center</property>
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<items>
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<item translatable="yes" id="none">None</item>
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<item translatable="yes" id="slight">Slight</item>
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<item translatable="yes" id="medium">Medium</item>
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<item translatable="yes" id="full">Full</item>
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</items>
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</object>
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</child>
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<layout>
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<property name="column">4</property>
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<property name="column-span">2</property>
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</layout>
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</object>
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</child>
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@ -97,24 +134,9 @@
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<object class="GtkCheckButton" id="antialias">
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<property name="label">Antialias</property>
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<property name="active">1</property>
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<layout>
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<property name="column">3</property>
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<property name="row">1</property>
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</layout>
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</object>
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</child>
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<child>
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<object class="GtkComboBoxText" id="hinting">
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<property name="active">0</property>
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<property name="valign">center</property>
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<items>
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<item translatable="yes" id="none">None</item>
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<item translatable="yes" id="slight">Slight</item>
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<item translatable="yes" id="medium">Medium</item>
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<item translatable="yes" id="full">Full</item>
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</items>
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<layout>
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<property name="column">4</property>
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<property name="row">1</property>
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</layout>
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</object>
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</child>
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@ -122,7 +144,7 @@
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<object class="GtkCheckButton" id="hint_metrics">
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<property name="label">Hint Metrics</property>
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<layout>
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<property name="column">4</property>
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<property name="column">5</property>
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<property name="row">1</property>
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</layout>
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</object>
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@ -131,7 +153,7 @@
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<object class="GtkCheckButton" id="show_extents">
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<property name="label">Show Extents</property>
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<layout>
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<property name="column">5</property>
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<property name="column">6</property>
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<property name="row">0</property>
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</layout>
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</object>
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@ -140,7 +162,7 @@
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<object class="GtkCheckButton" id="show_grid">
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<property name="label">Show Grid</property>
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<layout>
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<property name="column">5</property>
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<property name="column">6</property>
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<property name="row">1</property>
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</layout>
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</object>
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@ -152,7 +174,7 @@
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<class name="circular"/>
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</style>
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<layout>
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<property name="column">6</property>
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<property name="column">7</property>
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<property name="row">0</property>
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</layout>
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</object>
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@ -164,7 +186,7 @@
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<class name="circular"/>
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</style>
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<layout>
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<property name="column">6</property>
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<property name="column">7</property>
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<property name="row">1</property>
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</layout>
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</object>
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@ -173,7 +195,7 @@
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<object class="GtkLabel">
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<property name="hexpand">1</property>
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<layout>
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<property name="column">7</property>
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<property name="column">8</property>
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</layout>
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</object>
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</child>
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