243 lines
7.2 KiB
C
243 lines
7.2 KiB
C
/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#pragma off (unreferenced)
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static char rcsid[] = "$Id: scroll.c,v 1.1.1.1 2001-01-19 03:30:14 bradleyb Exp $";
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#pragma on (unreferenced)
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#include <stdlib.h>
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#include "fix.h"
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#include "types.h"
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#include "gr.h"
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#include "ui.h"
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#include "key.h"
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#define TICKER (*(volatile int *)0x46C)
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void ui_draw_scrollbar( UI_GADGET_SCROLLBAR * scrollbar )
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{
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int x, y;
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if (scrollbar->status==0)
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return;
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scrollbar->status = 0;
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x = y = 0;
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ui_mouse_hide();
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gr_set_current_canvas( scrollbar->canvas );
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if (CurWindow->keyboard_focus_gadget == (UI_GADGET *)scrollbar)
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gr_setcolor( CRED );
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else
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gr_setcolor( CGREY );
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gr_rect( 0, 0, scrollbar->width-1, scrollbar->fake_position-1 );
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gr_rect( 0, scrollbar->fake_position+scrollbar->fake_size, scrollbar->width-1, scrollbar->height-1);
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ui_draw_box_out(0, scrollbar->fake_position, scrollbar->width-1, scrollbar->fake_position+scrollbar->fake_size-1 );
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ui_mouse_show();
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}
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UI_GADGET_SCROLLBAR * ui_add_gadget_scrollbar( UI_WINDOW * wnd, short x, short y, short w, short h, int start, int stop, int position, int window_size )
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{
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int tw, th, taw;
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UI_GADGET_SCROLLBAR * scrollbar;
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char up[2];
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char down[2];
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up[0] = 30; up[1] = 0;
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down[0] = 31; down[1] = 0;
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gr_get_string_size( up, &tw, &th, &taw );
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w = tw + 10;
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if (stop < start ) stop = start;
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scrollbar = (UI_GADGET_SCROLLBAR *)ui_gadget_add( wnd, 3, x, y+w, x+w-1, y+h-w-1 );
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scrollbar->up_button = ui_add_gadget_button( wnd, x, y, w, w, up, NULL );
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scrollbar->up_button->parent = (UI_GADGET *)scrollbar;
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scrollbar->down_button =ui_add_gadget_button( wnd, x, y+h-w, w, w, down, NULL );
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scrollbar->down_button->parent = (UI_GADGET *)scrollbar;
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scrollbar->horz = 0;
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scrollbar->width = scrollbar->x2-scrollbar->x1+1;
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scrollbar->height = scrollbar->y2-scrollbar->y1+1;
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scrollbar->start = start;
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scrollbar->stop = stop;
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scrollbar->position = position;
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scrollbar->window_size = window_size;
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scrollbar->fake_length = scrollbar->height;
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scrollbar->fake_position = 0;
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if (stop!=start)
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scrollbar->fake_size = (window_size * scrollbar->height)/(stop-start+1+window_size);
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else
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scrollbar->fake_size = scrollbar->height;
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if (scrollbar->fake_size < 7) scrollbar->fake_size = 7;
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scrollbar->dragging = 0;
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scrollbar->moved=0;
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scrollbar->last_scrolled = 0;
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return scrollbar;
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}
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void ui_scrollbar_do( UI_GADGET_SCROLLBAR * scrollbar, int keypress )
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{
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int OnMe, OnSlider, keyfocus;
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int oldpos, op;
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keyfocus = 0;
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keypress = keypress;
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if (CurWindow->keyboard_focus_gadget==(UI_GADGET *)scrollbar)
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keyfocus = 1;
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if (scrollbar->start==scrollbar->stop)
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{
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scrollbar->position = 0;
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scrollbar->fake_position = 0;
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ui_draw_scrollbar( scrollbar );
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return;
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}
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op = scrollbar->position;
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oldpos = scrollbar->fake_position;
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scrollbar->moved = 0;
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if ( (scrollbar->up_button->position!=0) || (keyfocus && keyd_pressed[KEY_UP]) )
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{
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if (TICKER > scrollbar->last_scrolled+1)
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{
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scrollbar->last_scrolled = TICKER;
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scrollbar->position--;
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if (scrollbar->position < scrollbar->start )
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scrollbar->position = scrollbar->start;
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scrollbar->fake_position = scrollbar->position-scrollbar->start;
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scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
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scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
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}
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}
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if ( (scrollbar->down_button->position!=0) || (keyfocus && keyd_pressed[KEY_DOWN]) )
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{
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if (TICKER > scrollbar->last_scrolled+1)
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{
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scrollbar->last_scrolled = TICKER;
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scrollbar->position++;
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if (scrollbar->position > scrollbar->stop )
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scrollbar->position = scrollbar->stop;
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scrollbar->fake_position = scrollbar->position-scrollbar->start;
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scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
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scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
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}
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}
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OnMe = ui_mouse_on_gadget( (UI_GADGET *)scrollbar );
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//gr_ubox(0, scrollbar->fake_position, scrollbar->width-1, scrollbar->fake_position+scrollbar->fake_size-1 );
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if (!B1_PRESSED )
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scrollbar->dragging = 0;
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//if (B1_PRESSED && OnMe )
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// listbox->dragging = 1;
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OnSlider = 0;
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if ((Mouse.y >= scrollbar->fake_position+scrollbar->y1) && \
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(Mouse.y < scrollbar->fake_position+scrollbar->y1+scrollbar->fake_size) && OnMe )
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OnSlider = 1;
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if (B1_JUST_PRESSED && OnSlider )
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{
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scrollbar->dragging = 1;
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scrollbar->drag_x = Mouse.x;
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scrollbar->drag_y = Mouse.y;
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scrollbar->drag_starting = scrollbar->fake_position;
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}
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if ( B1_PRESSED && OnMe && !OnSlider && (TICKER > scrollbar->last_scrolled+4) )
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{
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scrollbar->last_scrolled = TICKER;
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if ( Mouse.y < scrollbar->fake_position+scrollbar->y1 )
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{
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// Page Up
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scrollbar->position -= scrollbar->window_size;
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if (scrollbar->position < scrollbar->start )
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scrollbar->position = scrollbar->start;
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} else {
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// Page Down
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scrollbar->position += scrollbar->window_size;
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if (scrollbar->position > scrollbar->stop )
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scrollbar->position = scrollbar->stop;
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}
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scrollbar->fake_position = scrollbar->position-scrollbar->start;
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scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
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scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
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}
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if ((selected_gadget==(UI_GADGET *)scrollbar) && B1_PRESSED && scrollbar->dragging )
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{
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//Mouse.x = scrollbar->drag_x;
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scrollbar->fake_position = scrollbar->drag_starting + (Mouse.y - scrollbar->drag_y );
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if (scrollbar->fake_position<0)
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{
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scrollbar->fake_position = 0;
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//Mouse.y = scrollbar->fake_position + scrollbar->drag_y - scrollbar->drag_starting;
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}
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if (scrollbar->fake_position > (scrollbar->height-scrollbar->fake_size))
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{
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scrollbar->fake_position = (scrollbar->height-scrollbar->fake_size);
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//Mouse.y = scrollbar->fake_position + scrollbar->drag_y - scrollbar->drag_starting;
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}
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//mouse_set_pos( Mouse.x, Mouse.y );
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scrollbar->position = scrollbar->fake_position;
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scrollbar->position *= (scrollbar->stop-scrollbar->start);
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scrollbar->position /= ( scrollbar->height-scrollbar->fake_size ) ;
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scrollbar->position += scrollbar->start;
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if (scrollbar->position > scrollbar->stop )
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scrollbar->position = scrollbar->stop;
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if (scrollbar->position < scrollbar->start )
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scrollbar->position = scrollbar->start;
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//scrollbar->fake_position = scrollbar->position-scrollbar->start;
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//scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
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//scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
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}
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if (op != scrollbar->position )
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scrollbar->moved = 1;
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if (oldpos != scrollbar->fake_position)
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scrollbar->status = 1;
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ui_draw_scrollbar( scrollbar );
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}
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