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widget-factory: Backport error state examples

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Backport changes from master to introduce error
states in the preference dialog on page 2.
This commit is contained in:
Matthias Clasen 2020-08-15 08:44:44 -04:00
parent 007243c151
commit ebafe781b4
2 changed files with 91 additions and 0 deletions
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70
demos/widget-factory/widget-factory.c
View File

@ -1655,6 +1655,66 @@ adjustment3_value_changed (GtkAdjustment *adj, GtkProgressBar *pbar)
gtk_progress_bar_set_fraction (pbar, fraction);
}
static void
validate_more_details (GtkEntry *entry,
GParamSpec *pspec,
GtkEntry *details)
{
if (strlen (gtk_entry_get_text (entry)) > 0 &&
strlen (gtk_entry_get_text (details)) == 0)
{
gtk_widget_set_tooltip_text (GTK_WIDGET (entry), "Must have details first");
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (entry)), "error");
}
else
{
gtk_widget_set_tooltip_text (GTK_WIDGET (entry), "");
gtk_style_context_remove_class (gtk_widget_get_style_context (GTK_WIDGET (entry)), "error");
}
}
static gboolean
mode_switch_state_set (GtkSwitch *sw, gboolean state)
{
GtkWidget *dialog = gtk_widget_get_ancestor (GTK_WIDGET (sw), GTK_TYPE_DIALOG);
GtkWidget *scale = GTK_WIDGET (g_object_get_data (G_OBJECT (dialog), "level_scale"));
GtkWidget *label = GTK_WIDGET (g_object_get_data (G_OBJECT (dialog), "error_label"));
if (!state ||
(gtk_range_get_value (GTK_RANGE (scale)) > 50))
{
gtk_widget_hide (label);
gtk_switch_set_state (sw, state);
}
else
{
gtk_widget_show (label);
}
return TRUE;
}
static void
level_scale_value_changed (GtkRange *range)
{
GtkWidget *dialog = gtk_widget_get_ancestor (GTK_WIDGET (range), GTK_TYPE_DIALOG);
GtkWidget *sw = GTK_WIDGET (g_object_get_data (G_OBJECT (dialog), "mode_switch"));
GtkWidget *label = GTK_WIDGET (g_object_get_data (G_OBJECT (dialog), "error_label"));
if (gtk_switch_get_active (GTK_SWITCH (sw)) &&
!gtk_switch_get_state (GTK_SWITCH (sw)) &&
(gtk_range_get_value (range) > 50))
{
gtk_widget_hide (label);
gtk_switch_set_state (GTK_SWITCH (sw), TRUE);
}
else if (gtk_switch_get_state (GTK_SWITCH (sw)) &&
(gtk_range_get_value (range) <= 50))
{
gtk_switch_set_state (GTK_SWITCH (sw), FALSE);
}
}
static void
activate (GApplication *app)
{
@ -1722,6 +1782,9 @@ activate (GApplication *app)
gtk_builder_add_callback_symbol (builder, "reset_icon_size", (GCallback)reset_icon_size);
gtk_builder_add_callback_symbol (builder, "scale_format_value", (GCallback)scale_format_value);
gtk_builder_add_callback_symbol (builder, "scale_format_value_blank", (GCallback)scale_format_value_blank);
gtk_builder_add_callback_symbol (builder, "validate_more_details", (GCallback)validate_more_details);
gtk_builder_add_callback_symbol (builder, "mode_switch_state_set", (GCallback)mode_switch_state_set);
gtk_builder_add_callback_symbol (builder, "level_scale_value_changed", (GCallback)level_scale_value_changed);
gtk_builder_connect_signals (builder, NULL);
@ -1820,6 +1883,13 @@ activate (GApplication *app)
widget = (GtkWidget *)gtk_builder_get_object (builder, "circular_button");
g_signal_connect (widget, "clicked", G_CALLBACK (show_dialog), dialog);
widget = (GtkWidget *)gtk_builder_get_object (builder, "level_scale");
g_object_set_data (G_OBJECT (dialog), "level_scale", widget);
widget = (GtkWidget *)gtk_builder_get_object (builder, "mode_switch");
g_object_set_data (G_OBJECT (dialog), "mode_switch", widget);
widget = (GtkWidget *)gtk_builder_get_object (builder, "error_label");
g_object_set_data (G_OBJECT (dialog), "error_label", widget);
dialog = (GtkWidget *)gtk_builder_get_object (builder, "selection_dialog");
g_object_set_data (G_OBJECT (window), "selection_dialog", dialog);
widget = (GtkWidget *)gtk_builder_get_object (builder, "text3");

21
demos/widget-factory/widget-factory.ui
View File

@ -3989,6 +3989,7 @@ bad things might happen.</property>
<packing>
<property name="left-attach">1</property>
<property name="top-attach">0</property>
<property name="width">2</property>
</packing>
</child>
<child>
@ -4012,10 +4013,12 @@ bad things might happen.</property>
<object class="GtkEntry" id="more_details_entry">
<property name="visible">1</property>
<property name="valign">baseline</property>
<signal name="notify::text" handler="validate_more_details" object="details_entry" swapped="no"/>
</object>
<packing>
<property name="left-attach">1</property>
<property name="top-attach">1</property>
<property name="width">2</property>
</packing>
</child>
<child>
@ -4041,10 +4044,12 @@ bad things might happen.</property>
<property name="valign">baseline</property>
<property name="draw-value">0</property>
<property name="adjustment">adjustment1</property>
<signal name="value-changed" handler="level_scale_value_changed"/>
</object>
<packing>
<property name="left-attach">1</property>
<property name="top-attach">2</property>
<property name="width">2</property>
</packing>
</child>
<child>
@ -4069,12 +4074,28 @@ bad things might happen.</property>
<property name="visible">1</property>
<property name="halign">start</property>
<property name="valign">baseline</property>
<signal name="state-set" handler="mode_switch_state_set"/>
</object>
<packing>
<property name="left-attach">1</property>
<property name="top-attach">3</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="error_label">
<property name="visible">0</property>
<property name="halign">start</property>
<property name="valign">baseline</property>
<property name="label">Level too low</property>
<style>
<class name="error"/>
</style>
</object>
<packing>
<property name="left-attach">2</property>
<property name="top-attach">3</property>
</packing>
</child>
</object>
</child>
</object>