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/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** AlexeyKharkov
** (if your name is missing here, please add it)
*/
#include "precomp.h"
#include "API/Display/font.h"
#include "API/Display/display.h"
#include "API/Display/keys.h"
#include "API/Core/System/system.h"
#include "API/GUI/inputbox_stylebase.h"
// Constructor
CL_InputBox_StyleBase::CL_InputBox_StyleBase(CL_InputBox *inputbox, CL_ResourceManager *resources, std::string const & font_name, int border_size)
:
inputbox(inputbox),
border_size(border_size),
show_cursor(false),
draw_from(0)
{
font = new CL_Font(font_name, resources);
if (font)
font->set_color( CL_Color::black );
cursor_blink_time = CL_System::get_time();
slot_input_down = inputbox->sig_input_down().connect(
this, &CL_InputBox_StyleBase::on_input_down);
slot_input_up = inputbox->sig_input_up().connect(
this, &CL_InputBox_StyleBase::on_input_up);
slot_mouse_move = inputbox->sig_mouse_move().connect(
this, &CL_InputBox_StyleBase::on_mouse_move);
}
// Destructor
CL_InputBox_StyleBase::~CL_InputBox_StyleBase()
{
delete font;
}
// -------------------------------------------------------------------------------------
void CL_InputBox_StyleBase::on_input_down(const CL_InputEvent &key)
{
// Start selecting with mouse?
if(key.id == CL_MOUSE_LEFT)
{
inputbox->on_mouse_Ldown( get_mouse_position(key.mouse_pos.x, key.mouse_pos.y) );
return;
}
int old_cur_pos = inputbox->get_cursor_position();
inputbox->on_input_down(key);
int new_cur_pos = inputbox->get_cursor_position();
if (new_cur_pos != old_cur_pos)
{
//I redid this part as scrolling around an edit box via cursor keys was behaving strangely, and the full size
//of edit box was not usable. -SAR/mrfun 1-29-2008
std::string const & text = inputbox->get_text();
int draw_start_index = draw_from; //default view
int draw_finish_index = text.size()-1; //the default
int text_width = 0;
int input_area_width = inputbox->get_width()- ( border_size*2);
int scrolled_from_left_x = 0;
int cur_pos_start_offsetx = 0;
//calculate what is going to fit in the input box
int cur_letter_width;
int kerning = font->get_width_offset();
if (draw_start_index != 0 && input_area_width > get_chars_width(0, text.size()))
{
//maybe some text was deleted with cut or del.
draw_start_index = 0;
}
//make sure our view isn't pass the user cursor
if (draw_start_index > inputbox->get_cursor_position()) draw_start_index = inputbox->get_cursor_position();
for (unsigned int i=draw_start_index; i < text.size(); i++)
{
cur_letter_width = get_chars_width(i,i) + kerning;
if (int(i) < inputbox->get_cursor_position())
{
cur_pos_start_offsetx += cur_letter_width;
}
text_width += cur_letter_width;
while (cur_pos_start_offsetx-scrolled_from_left_x >= input_area_width)
{
//we need to start scrolling to the right now,
scrolled_from_left_x += get_chars_width(draw_start_index,draw_start_index)+kerning;
text_width -= get_chars_width(draw_start_index, draw_start_index)+kerning;
draw_start_index++;
}
if (text_width >= input_area_width)
{
//we've gone too far.
text_width -= cur_letter_width;
draw_finish_index = i-1; //don't include this character
break;
}
draw_from = draw_start_index;
}
}
}
void CL_InputBox_StyleBase::on_input_up(const CL_InputEvent &key)
{
// End mouse-selecting
if(key.id == CL_MOUSE_LEFT)
{
inputbox->on_mouse_Lup( get_mouse_position(key.mouse_pos.x, key.mouse_pos.y) );
return;
}
inputbox->on_input_up(key);
}
void CL_InputBox_StyleBase::on_mouse_move(const CL_InputEvent &key)
{
inputbox->on_mouse_move( get_mouse_position(key.mouse_pos.x, key.mouse_pos.y) );
}
int CL_InputBox_StyleBase::get_mouse_position(int x, int y)
{
int delta_x = x;
unsigned int i;
std::string const & text = inputbox->get_text();
for (i = draw_from; i < text.length(); i++)
{
int w = font->get_width( (unsigned char)text[i] );;
delta_x -= w;
if (delta_x <= -w/2)
{
return i;// + last_offset;
}
}
return i;
}
int CL_InputBox_StyleBase::get_chars_width( int from, int to ) const
{
std::string const & text = inputbox->get_text();
if ( from < 0 ) from = 0;
if ( to >= (int)text.length() ) to = text.length() - 1;
if ( to < from ) return 0;
if (inputbox->in_password_mode())
return (to - from + 1) * font->get_width('*');
int res = 0;
for (int i=from; i<=to; ++i)
res += font->get_width( (unsigned char)text[i] );
return res;
}
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