1/*
2 * Copyright (c) 1999-2000, Eric Moon.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions, and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions, and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
27 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31
32// ParameterContainerView.cpp
33
34#include "ParameterContainerView.h"
35
36// Interface Kit
37#include <ScrollBar.h>
38#include <View.h>
39
40__USE_CORTEX_NAMESPACE
41
42#include <Debug.h>
43#define D_ALLOC(x) //PRINT (x)
44#define D_HOOK(x) //PRINT (x)
45#define D_INTERNAL(x) //PRINT (x)
46
47// -------------------------------------------------------- //
48// *** ctor/dtor
49// -------------------------------------------------------- //
50
51ParameterContainerView::ParameterContainerView(
52	BRect dataRect,
53	BView *target) :
54		BView(
55			target->Frame(),
56			"ParameterContainerView",
57			B_FOLLOW_ALL_SIDES,
58			B_FRAME_EVENTS|B_WILL_DRAW),
59		m_target(target),
60	  m_dataRect(dataRect),
61	  m_boundsRect(Bounds()),
62	  m_hScroll(0),
63	  m_vScroll(0) {
64	D_ALLOC(("ParameterContainerView::ParameterContainerView()\n"));
65
66	BView* wrapper = new BView(
67		m_target->Bounds(), 0, B_FOLLOW_ALL_SIDES, B_WILL_DRAW|B_FRAME_EVENTS);
68	m_target->SetResizingMode(B_FOLLOW_LEFT|B_FOLLOW_TOP);
69	m_target->MoveTo(B_ORIGIN);
70	wrapper->AddChild(m_target);
71	AddChild(wrapper);
72
73	BRect b = wrapper->Frame();
74
75	ResizeTo(
76		b.Width() + B_V_SCROLL_BAR_WIDTH,
77		b.Height() + B_H_SCROLL_BAR_HEIGHT);
78
79	BRect hsBounds = b;
80	hsBounds.left--;
81	hsBounds.top = hsBounds.bottom + 1;
82	hsBounds.right++;
83	hsBounds.bottom = hsBounds.top + B_H_SCROLL_BAR_HEIGHT + 1;
84	m_hScroll = new BScrollBar(
85		hsBounds,
86		"hScrollBar",
87		m_target,
88		0, 0, B_HORIZONTAL);
89	AddChild(m_hScroll);
90
91	BRect vsBounds = b;
92	vsBounds.left = vsBounds.right + 1;
93	vsBounds.top--;
94	vsBounds.right = vsBounds.right + B_V_SCROLL_BAR_WIDTH + 1;
95	vsBounds.bottom++;
96	m_vScroll = new BScrollBar(
97		vsBounds,
98		"vScrollBar",
99		m_target,
100		0, 0, B_VERTICAL);
101	AddChild(m_vScroll);
102
103
104	SetViewColor(tint_color(ui_color(B_PANEL_BACKGROUND_COLOR), B_LIGHTEN_1_TINT));
105	_updateScrollBars();
106}
107
108ParameterContainerView::~ParameterContainerView() {
109	D_ALLOC(("ParameterContainerView::~ParameterContainerView()\n"));
110
111}
112
113// -------------------------------------------------------- //
114// *** BScrollView impl
115// -------------------------------------------------------- //
116
117void ParameterContainerView::FrameResized(
118	float width,
119	float height) {
120	D_HOOK(("ParameterContainerView::FrameResized()\n"));
121
122	BView::FrameResized(width, height);
123//	BRect b = ChildAt(0)->Frame();
124//	printf("param view:\n");
125//	b.PrintToStream();
126//	printf("hScroll:\n");
127//	m_target->ScrollBar(B_HORIZONTAL)->Frame().PrintToStream();
128//	printf("vScroll:\n");
129//	m_target->ScrollBar(B_VERTICAL)->Frame().PrintToStream();
130//	fprintf(stderr, "m: %.1f,%.1f c: %.1f,%.1f)\n", width, height, b.Width(),b.Height());
131
132	if(height > m_boundsRect.Height()) {
133		Invalidate(BRect(
134			m_boundsRect.left, m_boundsRect.bottom, m_boundsRect.right, m_boundsRect.top+height));
135	}
136
137	if(width > m_boundsRect.Width()) {
138		Invalidate(BRect(
139			m_boundsRect.right, m_boundsRect.top, m_boundsRect.left+width, m_boundsRect.bottom));
140	}
141
142	m_boundsRect = Bounds();
143	_updateScrollBars();
144}
145
146// -------------------------------------------------------- //
147// *** internal operations
148// -------------------------------------------------------- //
149
150void ParameterContainerView::_updateScrollBars() {
151	D_INTERNAL(("ParameterContainerView::_updateScrollBars()\n"));
152
153	// fetch the vertical ScrollBar
154	if (m_vScroll) {
155		float height = Bounds().Height() - B_H_SCROLL_BAR_HEIGHT;
156		// Disable the ScrollBar if the window is large enough to display
157		// the entire parameter view
158		D_INTERNAL((" -> dataRect.Height() = %f   scrollView.Height() = %f\n", m_dataRect.Height(), height));
159		if (height > m_dataRect.Height()) {
160			D_INTERNAL((" -> disable vertical scroll bar\n"));
161			m_vScroll->SetRange(0.0, 0.0);
162			m_vScroll->SetProportion(1.0);
163		}
164		else {
165			D_INTERNAL((" -> enable vertical scroll bar\n"));
166			m_vScroll->SetRange(m_dataRect.top, m_dataRect.bottom - height);
167			m_vScroll->SetProportion(height / m_dataRect.Height());
168		}
169	}
170	if (m_hScroll) {
171		float width = Bounds().Width() - B_V_SCROLL_BAR_WIDTH;
172		// Disable the ScrollBar if the view is large enough to display
173		// the entire data-rect
174		D_INTERNAL((" -> dataRect.Width() = %f   scrollView.Width() = %f\n", m_dataRect.Width(), width));
175		if (width > m_dataRect.Width()) {
176			D_INTERNAL((" -> disable horizontal scroll bar\n"));
177			m_hScroll->SetRange(0.0, 0.0);
178			m_hScroll->SetProportion(1.0);
179		}
180		else {
181			D_INTERNAL((" -> enable horizontal scroll bar\n"));
182			m_hScroll->SetRange(m_dataRect.left, m_dataRect.right - width);
183			m_hScroll->SetProportion(width / m_dataRect.Width());
184		}
185	}
186}
187
188// END -- ParameterContainerView.cpp --
189