WebSVN – Games.Descent – Blame – /common/ui/scroll.cpp

Rev	Author	Line No.	Line
1	pmbaty	1	/*
		2	* Portions of this file are copyright Rebirth contributors and licensed as
		3	* described in COPYING.txt.
		4	* Portions of this file are copyright Parallax Software and licensed
		5	* according to the Parallax license below.
		6	* See COPYING.txt for license details.
		7
		8	THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
		9	SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
		10	END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
		11	ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
		12	IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
		13	SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
		14	FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
		15	CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
		16	AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
		17	COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
		18	*/
		19
		20
		21	#include <stdlib.h>
		22
		23	#include "maths.h"
		24	#include "pstypes.h"
		25	#include "event.h"
		26	#include "gr.h"
		27	#include "ui.h"
		28	#include "mouse.h"
		29	#include "key.h"
		30	#include "timer.h"
		31
		32	namespace dcx {
		33
		34	void ui_draw_scrollbar( UI_DIALOG dlg, UI_GADGET_SCROLLBAR scrollbar )
		35	{
		36	#if 0 //ndef OGL
		37	if (scrollbar->status==0)
		38	return;
		39	#endif
		40
		41	scrollbar->status = 0;
		42	gr_set_current_canvas( scrollbar->canvas );
		43	auto &canvas = *grd_curcanv;
		44
		45	const auto color = (dlg->keyboard_focus_gadget == scrollbar)
		46	? CRED
		47	: CGREY;
		48
		49	gr_rect(canvas, 0, 0, scrollbar->width - 1, scrollbar->fake_position - 1, color);
		50	gr_rect(canvas, 0, scrollbar->fake_position + scrollbar->fake_size, scrollbar->width - 1, scrollbar->height - 1, color);
		51	ui_draw_box_out(canvas, 0, scrollbar->fake_position, scrollbar->width - 1, scrollbar->fake_position + scrollbar->fake_size - 1);
		52	}
		53
		54	std::unique_ptr<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)
		55	{
		56	int tw;
		57
		58	auto &up = "\x1e";
		59	auto &down = "\x1f";
		60
		61	gr_get_string_size(*grd_curcanv->cv_font, up, &tw, nullptr, nullptr);
		62
		63	w = tw + 10;
		64
		65	if (stop < start ) stop = start;
		66
		67	std::unique_ptr<UI_GADGET_SCROLLBAR> scrollbar{ui_gadget_add<UI_GADGET_SCROLLBAR>(dlg, x, y+w, x+w-1, y+h-w-1)};
		68
		69	scrollbar->up_button = ui_add_gadget_button( dlg, x, y, w, w, up, NULL );
		70	scrollbar->up_button->parent = scrollbar.get();
		71
		72	scrollbar->down_button =ui_add_gadget_button( dlg, x, y+h-w, w, w, down, NULL );
		73	scrollbar->down_button->parent = scrollbar.get();
		74
		75	scrollbar->horz = 0;
		76	scrollbar->width = scrollbar->x2-scrollbar->x1+1;
		77	scrollbar->height = scrollbar->y2-scrollbar->y1+1;
		78	scrollbar->start = start;
		79	scrollbar->stop = stop;
		80	scrollbar->position = position;
		81	scrollbar->window_size = window_size;
		82	scrollbar->fake_length = scrollbar->height;
		83	scrollbar->fake_position = 0;
		84	if (stop!=start)
		85	scrollbar->fake_size = (window_size * scrollbar->height)/(stop-start+1+window_size);
		86	else
		87	scrollbar->fake_size = scrollbar->height;
		88
		89	if (scrollbar->fake_size < 7) scrollbar->fake_size = 7;
		90	scrollbar->dragging = 0;
		91	scrollbar->moved=0;
		92	scrollbar->last_scrolled = 0;
		93	return scrollbar;
		94
		95	}
		96
		97	window_event_result ui_scrollbar_do( UI_DIALOG dlg, UI_GADGET_SCROLLBAR scrollbar,const d_event &event )
		98	{
		99	int OnMe, OnSlider, keyfocus;
		100	int oldpos, op;
		101	int x, y, z;
		102	window_event_result rval = window_event_result::ignored;
		103
		104	if (event.type == EVENT_WINDOW_DRAW)
		105	{
		106	ui_draw_scrollbar( dlg, scrollbar );
		107	return window_event_result::ignored;
		108	}
		109
		110	keyfocus = 0;
		111
		112	if (dlg->keyboard_focus_gadget==scrollbar)
		113	keyfocus = 1;
		114
		115	if (scrollbar->start==scrollbar->stop)
		116	{
		117	scrollbar->position = 0;
		118	scrollbar->fake_position = 0;
		119	ui_draw_scrollbar( dlg, scrollbar );
		120	return window_event_result::ignored;
		121	}
		122
		123	op = scrollbar->position;
		124
		125	oldpos = scrollbar->fake_position;
		126
		127	scrollbar->moved = 0;
		128
		129
		130	if (keyfocus && event.type == EVENT_KEY_COMMAND)
		131	{
		132	int key;
		133
		134	key = event_key_get(event);
		135
		136	if (key & KEY_UP)
		137	{
		138	scrollbar->up_button->position = 2;
		139	rval = window_event_result::handled;
		140	}
		141	else if (key & KEY_DOWN)
		142	{
		143	scrollbar->down_button->position = 2;
		144	rval = window_event_result::handled;
		145	}
		146	}
		147	else if (keyfocus && event.type == EVENT_KEY_RELEASE)
		148	{
		149	int key;
		150
		151	key = event_key_get(event);
		152
		153	if (key & KEY_UP)
		154	{
		155	scrollbar->up_button->position = 0;
		156	rval = window_event_result::handled;
		157	}
		158	else if (key & KEY_DOWN)
		159	{
		160	scrollbar->down_button->position = 0;
		161	rval = window_event_result::handled;
		162	}
		163	}
		164
		165	if (scrollbar->up_button->position!=0)
		166	{
		167	if (timer_query() > scrollbar->last_scrolled + 1)
		168	{
		169	scrollbar->last_scrolled = timer_query();
		170	scrollbar->position--;
		171	if (scrollbar->position < scrollbar->start )
		172	scrollbar->position = scrollbar->start;
		173	scrollbar->fake_position = scrollbar->position-scrollbar->start;
		174	scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
		175	scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
		176	}
		177	}
		178
		179	if (scrollbar->down_button->position!=0)
		180	{
		181	if (timer_query() > scrollbar->last_scrolled + 1)
		182	{
		183	scrollbar->last_scrolled = timer_query();
		184	scrollbar->position++;
		185	if (scrollbar->position > scrollbar->stop )
		186	scrollbar->position = scrollbar->stop;
		187	scrollbar->fake_position = scrollbar->position-scrollbar->start;
		188	scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
		189	scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
		190	}
		191	}
		192
		193	OnMe = ui_mouse_on_gadget( scrollbar );
		194
		195	//gr_ubox(0, scrollbar->fake_position, scrollbar->width-1, scrollbar->fake_position+scrollbar->fake_size-1 );
		196
		197	if (B1_JUST_RELEASED)
		198	scrollbar->dragging = 0;
		199
		200	//if (B1_PRESSED && OnMe )
		201	// listbox->dragging = 1;
		202
		203
		204	mouse_get_pos(&x, &y, &z);
		205
		206	OnSlider = 0;
		207	if ((y >= scrollbar->fake_position+scrollbar->y1) && \
		208	(y < scrollbar->fake_position+scrollbar->y1+scrollbar->fake_size) && OnMe )
		209	OnSlider = 1;
		210
		211	if (B1_JUST_PRESSED && OnSlider )
		212	{
		213	scrollbar->dragging = 1;
		214	scrollbar->drag_x = x;
		215	scrollbar->drag_y = y;
		216	scrollbar->drag_starting = scrollbar->fake_position;
		217	rval = window_event_result::handled;
		218	}
		219	else if (B1_JUST_PRESSED && OnMe)
		220	{
		221	scrollbar->dragging = 2; // outside the slider
		222	rval = window_event_result::handled;
		223	}
		224
		225	if ((scrollbar->dragging == 2) && OnMe && !OnSlider && (timer_query() > scrollbar->last_scrolled + 4))
		226	{
		227	scrollbar->last_scrolled = timer_query();
		228
		229	if ( y < scrollbar->fake_position+scrollbar->y1 )
		230	{
		231	// Page Up
		232	scrollbar->position -= scrollbar->window_size;
		233	if (scrollbar->position < scrollbar->start )
		234	scrollbar->position = scrollbar->start;
		235
		236	} else {
		237	// Page Down
		238	scrollbar->position += scrollbar->window_size;
		239	if (scrollbar->position > scrollbar->stop )
		240	scrollbar->position = scrollbar->stop;
		241	}
		242	scrollbar->fake_position = scrollbar->position-scrollbar->start;
		243	scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
		244	scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
		245	}
		246
		247	if ((selected_gadget==scrollbar) && (scrollbar->dragging == 1))
		248	{
		249	//x = scrollbar->drag_x;
		250	scrollbar->fake_position = scrollbar->drag_starting + (y - scrollbar->drag_y );
		251	if (scrollbar->fake_position<0)
		252	{
		253	scrollbar->fake_position = 0;
		254	//y = scrollbar->fake_position + scrollbar->drag_y - scrollbar->drag_starting;
		255	}
		256	if (scrollbar->fake_position > (scrollbar->height-scrollbar->fake_size))
		257	{
		258	scrollbar->fake_position = (scrollbar->height-scrollbar->fake_size);
		259	//y = scrollbar->fake_position + scrollbar->drag_y - scrollbar->drag_starting;
		260	}
		261
		262	//mouse_set_pos( x, y );
		263
		264	scrollbar->position = scrollbar->fake_position;
		265	scrollbar->position *= (scrollbar->stop-scrollbar->start);
		266	scrollbar->position /= ( scrollbar->height-scrollbar->fake_size ) ;
		267	scrollbar->position += scrollbar->start;
		268
		269	if (scrollbar->position > scrollbar->stop )
		270	scrollbar->position = scrollbar->stop;
		271
		272	if (scrollbar->position < scrollbar->start )
		273	scrollbar->position = scrollbar->start;
		274
		275	//scrollbar->fake_position = scrollbar->position-scrollbar->start;
		276	//scrollbar->fake_position *= scrollbar->height-scrollbar->fake_size;
		277	//scrollbar->fake_position /= (scrollbar->stop-scrollbar->start);
		278
		279	}
		280
		281	if (op != scrollbar->position )
		282	scrollbar->moved = 1;
		283	if (scrollbar->moved)
		284	{
		285	rval = ui_gadget_send_event(dlg, EVENT_UI_GADGET_PRESSED, scrollbar);
		286	if (rval == window_event_result::ignored)
		287	rval = window_event_result::handled;
		288	}
		289
		290	if (oldpos != scrollbar->fake_position)
		291	scrollbar->status = 1;
		292
		293	return rval;
		294	}
		295
		296	}

Subversion Repositories Games.Descent

Games.Descent /common/ui/scroll.cpp – Rev 1