mirror of https://github.com/bsnes-emu/bsnes.git
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#if defined(Hiro_VerticalScrollBar)
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namespace hiro {
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static auto VerticalScrollBar_change(GtkRange* gtkRange, pVerticalScrollBar* p) -> void {
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auto position = (unsigned)gtk_range_get_value(gtkRange);
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if(p->state().position == position) return;
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p->state().position = position;
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if(!p->locked()) p->self().doChange();
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}
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auto pVerticalScrollBar::construct() -> void {
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#if HIRO_GTK==2
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gtkWidget = gtk_vscrollbar_new(nullptr);
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#elif HIRO_GTK==3
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gtkWidget = gtk_scrollbar_new(GTK_ORIENTATION_VERTICAL, nullptr);
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#endif
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setLength(state().length);
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setPosition(state().position);
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g_signal_connect(G_OBJECT(gtkWidget), "value-changed", G_CALLBACK(VerticalScrollBar_change), (gpointer)this);
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pWidget::construct();
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}
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auto pVerticalScrollBar::destruct() -> void {
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gtk_widget_destroy(gtkWidget);
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}
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auto pVerticalScrollBar::minimumSize() const -> Size {
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return {20, 0};
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}
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auto pVerticalScrollBar::setLength(unsigned length) -> void {
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auto lock = acquire();
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length += length == 0;
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gtk_range_set_range(GTK_RANGE(gtkWidget), 0, max(1u, length - 1));
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gtk_range_set_increments(GTK_RANGE(gtkWidget), 1, length >> 3);
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}
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auto pVerticalScrollBar::setPosition(unsigned position) -> void {
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gtk_range_set_value(GTK_RANGE(gtkWidget), position);
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}
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}
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#endif
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