UNIXworkcode

/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2017 Olaf Wintermann. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <stdio.h> #include <stdlib.h> #include "range.h" #include "container.h" #include "../common/context.h" #include "../common/object.h" static UIWIDGET ui_scrollbar(UiObject *obj, UiOrientation orientation, UiRange *range, ui_callback f, void *userdata) { #if GTK_MAJOR_VERSION >= 3 GtkWidget *scrollbar = gtk_scrollbar_new(orientation == UI_HORIZONTAL ? GTK_ORIENTATION_HORIZONTAL : GTK_ORIENTATION_VERTICAL, NULL); #else GtkWidget *scrollbar; if(orientation == UI_HORIZONTAL) { scrollbar = gtk_hscrollbar_new(NULL); } else { scrollbar = gtk_hscrollbar_new(NULL); } #endif if(range) { range->get = ui_scrollbar_get; range->set = ui_scrollbar_set; range->setrange = ui_scrollbar_setrange; range->setextent = ui_scrollbar_setextent; range->obj = scrollbar; } if(f) { UiEventData *event = malloc(sizeof(UiEventData)); event->obj = obj; event->userdata = userdata; event->callback = f; event->value = 0; event->customdata = NULL; g_signal_connect( G_OBJECT(scrollbar), "value-changed", G_CALLBACK(ui_scrollbar_value_changed), event); g_signal_connect( scrollbar, "destroy", G_CALLBACK(ui_destroy_userdata), event); } UiContainer *ct = uic_get_current_container(obj); ct->add(ct, scrollbar, FALSE); return scrollbar; } UIWIDGET ui_hscrollbar(UiObject *obj, UiRange *range, ui_callback f, void *userdata) { return ui_scrollbar(obj, UI_HORIZONTAL, range, f, userdata); } UIWIDGET ui_vscrollbar(UiObject *obj, UiRange *range, ui_callback f, void *userdata) { return ui_scrollbar(obj, UI_VERTICAL, range, f, userdata); } gboolean ui_scrollbar_value_changed(GtkRange *range, UiEventData *event) { UiEvent e; e.obj = event->obj; e.window = event->obj->window; e.document = event->obj->ctx->document; e.eventdata = NULL; e.intval = event->value; event->callback(&e, event->userdata); return TRUE; } double ui_scrollbar_get(UiRange *range) { double value = gtk_range_get_value(GTK_RANGE(range->obj)); range->value = value; return value; } void ui_scrollbar_set(UiRange *range, double value) { gtk_range_set_value(GTK_RANGE(range->obj), value); range->value = value; } void ui_scrollbar_setrange(UiRange *range, double min, double max) { gtk_range_set_range(GTK_RANGE(range->obj), min, max); range->min = min; range->max = max; } void ui_scrollbar_setextent(UiRange *range, double extent) { GtkAdjustment *a = gtk_range_get_adjustment(GTK_RANGE(range->obj)); #ifdef UI_GTK2LEGACY a->page_size = extent; #else gtk_adjustment_set_page_size(a, extent); #endif #if GTK_MAJOR_VERSION * 100 + GTK_MIMOR_VERSION < 318 gtk_adjustment_changed(a); #endif range->extent = extent; }