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dxx-rebirth/common/ui/scroll.cpp
Kp a881ee455e Remove fix.h
2013-08-08 03:01:48 +00:00

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/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
#include <stdlib.h>
#include "maths.h"
#include "pstypes.h"
#include "event.h"
#include "gr.h"
#include "ui.h"
#include "mouse.h"
#include "key.h"
#include "timer.h"
void ui_draw_scrollbar( UI_DIALOG *dlg, UI_GADGET_SCROLLBAR * scrollbar )
{
#if 0 //ndef OGL
if (scrollbar->status==0)
return;
#endif
scrollbar->status = 0;
gr_set_current_canvas( scrollbar->canvas );
if (dlg->keyboard_focus_gadget == (UI_GADGET *)scrollbar)
gr_setcolor( CRED );
else
gr_setcolor( CGREY );
gr_rect( 0, 0, scrollbar->width-1, scrollbar->fake_position-1 );
gr_rect( 0, scrollbar->fake_position+scrollbar->fake_size, scrollbar->width-1, scrollbar->height-1);
ui_draw_box_out(0, scrollbar->fake_position, scrollbar->width-1, scrollbar->fake_position+scrollbar->fake_size-1 );
}
UI_GADGET_SCROLLBAR * ui_add_gadget_scrollbar( UI_DIALOG * dlg, short x, short y, short w, short h, int start, int stop, int position, int window_size )
{
int tw, th, taw;
UI_GADGET_SCROLLBAR * scrollbar;
char up[2];
char down[2];
up[0] = 30; up[1] = 0;
down[0] = 31; down[1] = 0;
gr_get_string_size( up, &tw, &th, &taw );
w = tw + 10;
if (stop < start ) stop = start;
scrollbar = (UI_GADGET_SCROLLBAR *)ui_gadget_add( dlg, 3, x, y+w, x+w-1, y+h-w-1 );
scrollbar->up_button = ui_add_gadget_button( dlg, x, y, w, w, up, NULL );
scrollbar->up_button->parent = (UI_GADGET *)scrollbar;
scrollbar->down_button =ui_add_gadget_button( dlg, x, y+h-w, w, w, down, NULL );
scrollbar->down_button->parent = (UI_GADGET *)scrollbar;
scrollbar->horz = 0;
scrollbar->width = scrollbar->x2-scrollbar->x1+1;
scrollbar->height = scrollbar->y2-scrollbar->y1+1;
scrollbar->start = start;
scrollbar->stop = stop;
scrollbar->position = position;
scrollbar->window_size = window_size;
scrollbar->fake_length = scrollbar->height;
scrollbar->fake_position = 0;
if (stop!=start)
scrollbar->fake_size = (window_size * scrollbar->height)/(stop-start+1+window_size);
else
scrollbar->fake_size = scrollbar->height;
if (scrollbar->fake_size < 7) scrollbar->fake_size = 7;
scrollbar->dragging = 0;
scrollbar->moved=0;
scrollbar->last_scrolled = 0;
return scrollbar;
}
int ui_scrollbar_do( UI_DIALOG *dlg, UI_GADGET_SCROLLBAR * scrollbar, d_event *event )
{
int OnMe, OnSlider, keyfocus;
int oldpos, op;
int x, y, z;
int rval = 0;
if (event->type == EVENT_WINDOW_DRAW)
{
ui_draw_scrollbar( dlg, scrollbar );
return 0;
}
keyfocus = 0;
if (dlg->keyboard_focus_gadget==(UI_GADGET *)scrollbar)
keyfocus = 1;
if (scrollbar->start==scrollbar->stop)
{
scrollbar->position = 0;
scrollbar->fake_position = 0;
ui_draw_scrollbar( dlg, scrollbar );
return 0;
}
op = scrollbar->position;
oldpos = scrollbar->fake_position;
scrollbar->moved = 0;
if (keyfocus && event->type == EVENT_KEY_COMMAND)
{
int key;
key = event_key_get(event);
if (key & KEY_UP)
{
scrollbar->up_button->position = 2;
rval = 1;
}
else if (key & KEY_DOWN)
{
scrollbar->down_button->position = 2;
rval = 1;
}
}
else if (keyfocus && event->type == EVENT_KEY_RELEASE)
{
int key;
key = event_key_get(event);
if (key & KEY_UP)
{
scrollbar->up_button->position = 0;
rval = 1;
}
else if (key & KEY_DOWN)
{
scrollbar->down_button->position = 0;
rval = 1;
}
}
if (scrollbar->up_button->position!=0)
{
if (timer_query() > scrollbar->last_scrolled + 1)
{
scrollbar->last_scrolled = timer_query();
scrollbar->position--;
if (scrollbar->position < scrollbar->start )
scrollbar->position = scrollbar->start;
scrollbar->fake_position = scrollbar->position-scrollbar->start;
scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
}
}
if (scrollbar->down_button->position!=0)
{
if (timer_query() > scrollbar->last_scrolled + 1)
{
scrollbar->last_scrolled = timer_query();
scrollbar->position++;
if (scrollbar->position > scrollbar->stop )
scrollbar->position = scrollbar->stop;
scrollbar->fake_position = scrollbar->position-scrollbar->start;
scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
}
}
OnMe = ui_mouse_on_gadget( (UI_GADGET *)scrollbar );
//gr_ubox(0, scrollbar->fake_position, scrollbar->width-1, scrollbar->fake_position+scrollbar->fake_size-1 );
if (B1_JUST_RELEASED)
scrollbar->dragging = 0;
//if (B1_PRESSED && OnMe )
// listbox->dragging = 1;
mouse_get_pos(&x, &y, &z);
OnSlider = 0;
if ((y >= scrollbar->fake_position+scrollbar->y1) && \
(y < scrollbar->fake_position+scrollbar->y1+scrollbar->fake_size) && OnMe )
OnSlider = 1;
if (B1_JUST_PRESSED && OnSlider )
{
scrollbar->dragging = 1;
scrollbar->drag_x = x;
scrollbar->drag_y = y;
scrollbar->drag_starting = scrollbar->fake_position;
rval = 1;
}
else if (B1_JUST_PRESSED && OnMe)
{
scrollbar->dragging = 2; // outside the slider
rval = 1;
}
if ((scrollbar->dragging == 2) && OnMe && !OnSlider && (timer_query() > scrollbar->last_scrolled + 4))
{
scrollbar->last_scrolled = timer_query();
if ( y < scrollbar->fake_position+scrollbar->y1 )
{
// Page Up
scrollbar->position -= scrollbar->window_size;
if (scrollbar->position < scrollbar->start )
scrollbar->position = scrollbar->start;
} else {
// Page Down
scrollbar->position += scrollbar->window_size;
if (scrollbar->position > scrollbar->stop )
scrollbar->position = scrollbar->stop;
}
scrollbar->fake_position = scrollbar->position-scrollbar->start;
scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
}
if ((selected_gadget==(UI_GADGET *)scrollbar) && (scrollbar->dragging == 1))
{
//x = scrollbar->drag_x;
scrollbar->fake_position = scrollbar->drag_starting + (y - scrollbar->drag_y );
if (scrollbar->fake_position<0)
{
scrollbar->fake_position = 0;
//y = scrollbar->fake_position + scrollbar->drag_y - scrollbar->drag_starting;
}
if (scrollbar->fake_position > (scrollbar->height-scrollbar->fake_size))
{
scrollbar->fake_position = (scrollbar->height-scrollbar->fake_size);
//y = scrollbar->fake_position + scrollbar->drag_y - scrollbar->drag_starting;
}
//mouse_set_pos( x, y );
scrollbar->position = scrollbar->fake_position;
scrollbar->position *= (scrollbar->stop-scrollbar->start);
scrollbar->position /= ( scrollbar->height-scrollbar->fake_size ) ;
scrollbar->position += scrollbar->start;
if (scrollbar->position > scrollbar->stop )
scrollbar->position = scrollbar->stop;
if (scrollbar->position < scrollbar->start )
scrollbar->position = scrollbar->start;
//scrollbar->fake_position = scrollbar->position-scrollbar->start;
//scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
//scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
}
if (op != scrollbar->position )
scrollbar->moved = 1;
if (scrollbar->moved)
{
ui_gadget_send_event(dlg, EVENT_UI_GADGET_PRESSED, (UI_GADGET *)scrollbar);
rval = 1;
}
if (oldpos != scrollbar->fake_position)
scrollbar->status = 1;
return rval;
}
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