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fontchooser: Rewrite size changes

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They now go through gtk_font_chooser_widget_take_font_desc(). The end
goal is to make all changes go through this function, so that all
updates that are happening are easy to track.

Another change is that the code now merges the font description instead
of just using the new one. This avoids weird situations when people set
the font "Bold" for example, which has neither a size nor a font family.
This commit is contained in:
Benjamin Otte 2011-09-20 01:17:29 +02:00
parent af5f593b6d
commit fe8ed0a3f6
1 changed files with 36 additions and 41 deletions
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77
gtk/gtkfontchooserwidget.c
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@ -292,45 +292,21 @@ icon_press_cb (GtkEntry *entry,
}
static void
slider_change_cb (GtkAdjustment *adjustment,
gpointer user_data)
{
GtkFontChooserWidget *fc = (GtkFontChooserWidget*)user_data;
GtkFontChooserWidgetPrivate *priv = fc->priv;
GtkAdjustment *spin_adj = gtk_spin_button_get_adjustment(GTK_SPIN_BUTTON (priv->size_spin));
gdouble slider_value = gtk_adjustment_get_value (adjustment);
gdouble spin_value = gtk_adjustment_get_value (spin_adj);
if (slider_value != spin_value)
gtk_adjustment_set_value (spin_adj,
gtk_adjustment_get_value (adjustment));
}
static void
spin_change_cb (GtkAdjustment *adjustment,
size_change_cb (GtkAdjustment *adjustment,
gpointer user_data)
{
PangoFontDescription *desc;
GtkFontChooserWidget *fontchooser = (GtkFontChooserWidget*)user_data;
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
GtkAdjustment *slider_adj = gtk_range_get_adjustment (GTK_RANGE (priv->size_slider));
GtkFontChooserWidget *fontchooser = user_data;
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
PangoFontDescription *font_desc;
gdouble size = gtk_adjustment_get_value (adjustment);
desc = pango_context_get_font_description (gtk_widget_get_pango_context (priv->preview));
pango_font_description_set_size (desc, ((gint)size) * PANGO_SCALE);
gtk_widget_override_font (priv->preview, desc);
font_desc = pango_font_description_new ();
if (pango_font_description_get_size_is_absolute (priv->font_desc))
pango_font_description_set_absolute_size (priv->font_desc, size * PANGO_SCALE);
pango_font_description_set_absolute_size (font_desc, size * PANGO_SCALE);
else
pango_font_description_set_size (priv->font_desc, size * PANGO_SCALE);
pango_font_description_set_size (font_desc, size * PANGO_SCALE);
gtk_adjustment_set_value (slider_adj, size);
gtk_widget_queue_draw (priv->preview);
g_object_notify (G_OBJECT (fontchooser), "font");
g_object_notify (G_OBJECT (fontchooser), "font-desc");
gtk_font_chooser_widget_take_font_desc (fontchooser, font_desc);
}
static void
@ -509,6 +485,7 @@ gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser)
/* Default preview string */
priv->preview_text = g_strdup (pango_language_get_sample_string (NULL));
priv->show_preview_entry = TRUE;
priv->font_desc = pango_font_description_new ();
gtk_widget_push_composite_child ();
@ -600,9 +577,9 @@ gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser)
"icon-press", G_CALLBACK (icon_press_cb), NULL);
g_signal_connect (gtk_range_get_adjustment (GTK_RANGE (priv->size_slider)),
"value-changed", G_CALLBACK (slider_change_cb), fontchooser);
"value-changed", G_CALLBACK (size_change_cb), fontchooser);
g_signal_connect (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (priv->size_spin)),
"value-changed", G_CALLBACK (spin_change_cb), fontchooser);
"value-changed", G_CALLBACK (size_change_cb), fontchooser);
g_signal_connect (priv->family_face_list, "cursor-changed",
G_CALLBACK (cursor_changed_cb), fontchooser);
@ -971,6 +948,7 @@ gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser,
PangoFontDescription *font_desc)
{
GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
PangoFontMask mask;
if (font_desc && priv->font_desc &&
pango_font_description_equal (font_desc, priv->font_desc))
@ -979,14 +957,31 @@ gtk_font_chooser_widget_take_font_desc (GtkFontChooserWidget *fontchooser,
return;
}
if (priv->font_desc)
pango_font_description_free (priv->font_desc);
if (font_desc)
priv->font_desc = font_desc; /* adopted */
else
priv->font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME);
if (font_desc == NULL)
font_desc = pango_font_description_from_string (GTK_FONT_CHOOSER_DEFAULT_FONT_NAME);
gtk_font_chooser_widget_select_font (fontchooser);
pango_font_description_merge (priv->font_desc, font_desc, TRUE);
mask = pango_font_description_get_set_fields (font_desc);
if (mask & PANGO_FONT_MASK_SIZE)
{
double font_size = (double) pango_font_description_get_size (priv->font_desc) / PANGO_SCALE;
/* XXX: This clamps, which can cause it to reloop into here, do we need
* to block its signal handler? */
gtk_range_set_value (GTK_RANGE (priv->size_slider), font_size);
gtk_spin_button_set_value (GTK_SPIN_BUTTON (priv->size_spin), font_size);
}
if (mask & (PANGO_FONT_MASK_FAMILY | PANGO_FONT_MASK_STYLE | PANGO_FONT_MASK_VARIANT |
PANGO_FONT_MASK_WEIGHT | PANGO_FONT_MASK_STRETCH))
gtk_font_chooser_widget_select_font (fontchooser);
gtk_widget_override_font (priv->preview, priv->font_desc);
pango_font_description_free (font_desc); /* adopted */
g_object_notify (G_OBJECT (fontchooser), "font");
g_object_notify (G_OBJECT (fontchooser), "font-desc");
}
static void