117 lines
3.5 KiB
C++
117 lines
3.5 KiB
C++
/*
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* Dillo Widget
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*
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* Copyright 2005-2007 Sebastian Geerken <sgeerken@dillo.org>
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* Copyright 2024 Rodrigo Arias Mallo <rodarima@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __DW_FLTKVIEWPORT_HH__
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#define __DW_FLTKVIEWPORT_HH__
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#include <FL/Fl_Group.H>
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#include <FL/Fl_Scrollbar.H>
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#include "core.hh"
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#include "fltkcore.hh"
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#include "fltkviewbase.hh"
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namespace dw {
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namespace fltk {
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class FltkViewport: public FltkWidgetView
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{
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public:
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enum GadgetOrientation { GADGET_VERTICAL, GADGET_HORIZONTAL };
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private:
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enum { SCROLLBAR_THICKNESS = 15 };
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int scrollX, scrollY;
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int scrollDX, scrollDY;
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int scrollbarOnLeft;
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int hasDragScroll, dragScrolling, dragX, dragY;
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int horScrolling, verScrolling;
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bool scrollbarPageMode;
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int pageOverlap;
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enum dw::core::ScrollCommand pageScrolling;
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float pageScrollInterval;
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float pageScrollDelay;
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Fl_Scrollbar *vscrollbar, *hscrollbar;
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GadgetOrientation gadgetOrientation[4];
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std::list< std::unique_ptr < Fl_Widget > > gadgets;
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void adjustScrollbarsAndGadgetsAllocation ();
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void adjustScrollbarValues ();
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void hscrollbarChanged ();
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void vscrollbarChanged ();
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void positionChanged ();
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static void hscrollbarCallback (Fl_Widget *hscrollbar, void *viewportPtr);
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static void vscrollbarCallback (Fl_Widget *vscrollbar, void *viewportPtr);
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void selectionScroll();
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static void selectionScroll(void *vport);
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void repeatPageScroll ();
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static void repeatPageScroll (void *data);
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void updateCanvasWidgets (int oldScrollX, int oldScrollY);
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static void draw_area (void *data, int x, int y, int w, int h);
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protected:
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int translateViewXToCanvasX (int x);
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int translateViewYToCanvasY (int y);
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int translateCanvasXToViewX (int x);
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int translateCanvasYToViewY (int y);
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public:
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FltkViewport (int x, int y, int w, int h, const char *label = 0);
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~FltkViewport ();
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void resize(int x, int y, int w, int h);
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void draw ();
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int handle (int event);
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void setCanvasSize (int width, int ascent, int descent);
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bool usesViewport ();
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int getHScrollbarThickness ();
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int getVScrollbarThickness ();
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int getScrollbarOnLeft () {return scrollbarOnLeft; };
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void scroll(int dx, int dy);
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void scroll(dw::core::ScrollCommand cmd);
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void scrollTo (int x, int y);
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void setViewportSize (int width, int height,
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int hScrollbarThickness, int vScrollbarThickness);
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void setScrollStep(int step);
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void setGadgetOrientation (bool hscrollbarVisible, bool vscrollbarVisible,
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GadgetOrientation gadgetOrientation);
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void setDragScroll (bool enable) { hasDragScroll = enable ? 1 : 0; }
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void addGadget( std::unique_ptr< Fl_Widget > gadget );
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void setScrollbarOnLeft (bool enable);
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void setScrollbarPageMode(bool enable);
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void setPageOverlap(int overlap);
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};
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} // namespace fltk
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} // namespace dw
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#endif // __DW_FLTKVIEWPORT_HH__
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