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/*
Minetest
Copyright (C) 2021 Minetest
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "IGUIEditBox.h"
#include "IOSOperator.h"
#include "guiScrollBar.h"
#include <vector>
using namespace irr;
using namespace irr::gui;
class GUIEditBox : public IGUIEditBox
{
public:
GUIEditBox(IGUIEnvironment *environment, IGUIElement *parent, s32 id,
core::rect<s32> rectangle, bool border, bool writable) :
IGUIEditBox(environment, parent, id, rectangle),
m_border(border), m_writable(writable), m_frame_rect(rectangle)
{
}
virtual ~GUIEditBox();
//! Sets another skin independent font.
virtual void setOverrideFont(IGUIFont *font = 0);
virtual IGUIFont *getOverrideFont() const { return m_override_font; }
//! Get the font which is used right now for drawing
/** Currently this is the override font when one is set and the
font of the active skin otherwise */
virtual IGUIFont *getActiveFont() const;
//! Sets another color for the text.
virtual void setOverrideColor(video::SColor color);
//! Gets the override color
virtual video::SColor getOverrideColor() const;
//! Sets if the text should use the overide color or the
//! color in the gui skin.
virtual void enableOverrideColor(bool enable);
//! Checks if an override color is enabled
/** \return true if the override color is enabled, false otherwise */
virtual bool isOverrideColorEnabled(void) const
{
return m_override_color_enabled;
}
//! Enables or disables word wrap for using the edit box as multiline text editor.
virtual void setWordWrap(bool enable);
//! Checks if word wrap is enabled
//! \return true if word wrap is enabled, false otherwise
virtual bool isWordWrapEnabled() const { return m_word_wrap; }
//! Turns the border on or off
virtual void setDrawBorder(bool border);
virtual bool isDrawBorderEnabled() const { return m_border; }
//! Enables or disables newlines.
/** \param enable: If set to true, the EGET_EDITBOX_ENTER event will not be fired,
instead a newline character will be inserted. */
virtual void setMultiLine(bool enable);
//! Checks if multi line editing is enabled
//! \return true if mult-line is enabled, false otherwise
virtual bool isMultiLineEnabled() const { return m_multiline; }
//! Enables or disables automatic scrolling with cursor position
//! \param enable: If set to true, the text will move around with the cursor
//! position
virtual void setAutoScroll(bool enable);
//! Checks to see if automatic scrolling is enabled
//! \return true if automatic scrolling is enabled, false if not
virtual bool isAutoScrollEnabled() const { return m_autoscroll; }
//! Sets whether the edit box is a password box. Setting this to true will
/** disable MultiLine, WordWrap and the ability to copy with ctrl+c or ctrl+x
\param passwordBox: true to enable password, false to disable
\param passwordChar: the character that is displayed instead of letters */
virtual void setPasswordBox(bool passwordBox, wchar_t passwordChar = L'*');
//! Returns true if the edit box is currently a password box.
virtual bool isPasswordBox() const { return m_passwordbox; }
//! Sets text justification
virtual void setTextAlignment(EGUI_ALIGNMENT horizontal, EGUI_ALIGNMENT vertical);
//! Sets the new caption of this element.
virtual void setText(const wchar_t *text);
//! Sets the maximum amount of characters which may be entered in the box.
//! \param max: Maximum amount of characters. If 0, the character amount is
//! infinity.
virtual void setMax(u32 max);
//! Returns maximum amount of characters, previously set by setMax();
virtual u32 getMax() const { return m_max; }
//! Gets the size area of the text in the edit box
//! \return Returns the size in pixels of the text
virtual core::dimension2du getTextDimension();
//! set true if this EditBox is writable
virtual void setWritable(bool can_write_text);
//! called if an event happened.
virtual bool OnEvent(const SEvent &event);
//! Writes attributes of the element.
virtual void serializeAttributes(io::IAttributes *out,
io::SAttributeReadWriteOptions *options) const;
//! Reads attributes of the element
virtual void deserializeAttributes(
io::IAttributes *in, io::SAttributeReadWriteOptions *options);
protected:
virtual void breakText() = 0;
//! sets the area of the given line
virtual void setTextRect(s32 line) = 0;
//! set text markers
void setTextMarkers(s32 begin, s32 end);
//! send some gui event to parent
void sendGuiEvent(EGUI_EVENT_TYPE type);
//! calculates the current scroll position
virtual void calculateScrollPos() = 0;
virtual s32 getCursorPos(s32 x, s32 y) = 0;
bool processKey(const SEvent &event);
virtual void inputChar(wchar_t c);
//! returns the line number that the cursor is on
s32 getLineFromPos(s32 pos);
//! update the vertical scrollBar (visibilty & position)
void updateVScrollBar();
gui::IGUIFont *m_override_font = nullptr;
bool m_override_color_enabled = false;
bool m_word_wrap = false;
bool m_multiline = false;
bool m_autoscroll = true;
bool m_border;
bool m_passwordbox = false;
wchar_t m_passwordchar = L'*';
std::vector<core::stringw> m_broken_text;
std::vector<s32> m_broken_text_positions;
EGUI_ALIGNMENT m_halign = EGUIA_UPPERLEFT;
EGUI_ALIGNMENT m_valign = EGUIA_CENTER;
u32 m_blink_start_time = 0;
s32 m_cursor_pos = 0;
s32 m_hscroll_pos = 0;
s32 m_vscroll_pos = 0; // scroll position in characters
u32 m_max = 0;
video::SColor m_override_color = video::SColor(101, 255, 255, 255);
core::rect<s32> m_current_text_rect = core::rect<s32>(0, 0, 1, 1);
bool m_writable;
bool m_mouse_marking = false;
s32 m_mark_begin = 0;
s32 m_mark_end = 0;
gui::IGUIFont *m_last_break_font = nullptr;
IOSOperator *m_operator = nullptr;
core::rect<s32> m_frame_rect; // temporary values
u32 m_scrollbar_width = 0;
GUIScrollBar *m_vscrollbar = nullptr;
private:
bool processMouse(const SEvent &event);
bool onKeyUp(const SEvent &event, s32 &mark_begin, s32 &mark_end);
bool onKeyDown(const SEvent &event, s32 &mark_begin, s32 &mark_end);
void onKeyControlC(const SEvent &event);
bool onKeyControlX(const SEvent &event, s32 &mark_begin, s32 &mark_end);
bool onKeyControlV(const SEvent &event, s32 &mark_begin, s32 &mark_end);
bool onKeyBack(const SEvent &event, s32 &mark_begin, s32 &mark_end);
bool onKeyDelete(const SEvent &event, s32 &mark_begin, s32 &mark_end);
};
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