summaryrefslogtreecommitdiffstats
path: root/noatun/modules/winskin/waSlider.cpp
blob: 8c97c272a862bba7eb321892327782baba416336 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
/*
  Standard slider for Winskin
  Copyright (C) 1999  Martin Vogt
  Copyright (C) 2002  Ryan Cumming

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation.

  For more information look at the file COPYRIGHT in this package

 */

#include <stdlib.h>

#include "waSlider.h"
#include "waSkinModel.h"

WaSlider::WaSlider(int sliderBarMapId, int sliderId, bool is_volume) : WaWidget(sliderBarMapId)
{
    this->sliderBarMapId = sliderBarMapId;
 
    lDragging = false;

    currentValue = 0;
    setRange(0, 100);

    slider_y = is_volume ? 1 : 0;
    slider_x = 0;

    slider_width = WaSkinModel::instance()->getMapGeometry(sliderId).width();

    slider_visible = true;
}


WaSlider::~WaSlider()
{
}

void WaSlider::setPixmapSliderBar(int pixId)
{
    this->sliderBarId = pixId;
    update();
}

void WaSlider::paintEvent(TQPaintEvent *)
{
    // POSBAR.BMP does not have full height in all Winamp skins
    // Paint background before painting slider to be on the safe side
    if(sliderBarId == _WA_SKIN_POS_BAR)
        paintPixmap(-1);

    paintPixmap(sliderBarId, value());

    if (slider_visible) 
        paintPixmap(lDragging ? up_pixmap : down_pixmap, slider_x, slider_y);
}


void WaSlider::mouseMoveEvent(TQMouseEvent * e)
{
    if (lDragging == false) {
        WaWidget::mouseMoveEvent(e);
	return; 
    }

    int newX = e->x() - pressPoint.x();

    if (newX < 0) 
	newX = 0;

    TQSize size = sizeHint();

    int maxX = size.width() - slider_width;
    
    if(mapping == _WA_MAPPING_VOLUME_BAR) 
        maxX -= 3;
    
    if (newX > maxX)
        newX = maxX;
    
    int value = pixel2Value(newX);

    setValue(value);
}


void WaSlider::updateSliderPos(int value)
{
    if (value > maxValue) {
	value = maxValue;
    }
    if (value < minValue) {
	value = minValue;
    }

    int pixelPos = value2Pixel(value);
    slider_x = (pixelPos);
    
    update();
}

void WaSlider::mousePressEvent(TQMouseEvent *e) {
    if (e->button() != Qt::LeftButton && e->button() != Qt::MidButton) {
        WaWidget::mousePressEvent(e);
        return;
    }

    int maxX = slider_x - slider_width;
    
    if(mapping == _WA_MAPPING_VOLUME_BAR) 
        maxX -= 3;
    
    if ((e->x() < slider_x) || (e->x() > (maxX))) {
        int newX = e->x();
        newX -= (slider_width / 2);
        setValue(pixel2Value(newX));
   }

   
   pressPoint.setX(e->x() - slider_x);
   lDragging = true;

   update();

   emit(sliderPressed());
}
	
void WaSlider::mouseReleaseEvent(TQMouseEvent *e)
{
    if (!lDragging) {
        WaWidget::mouseReleaseEvent(e);
        return;
    }

    lDragging = false;
    update();

    emit(sliderReleased());
}


int WaSlider::pixel2Value(int xpos)
{
    TQSize size = sizeHint();
    int min = abs(minValue);
    int max = abs(maxValue);

    int valuerange = min + max;
    int pixelrange = size.width() - slider_width;

    if(mapping == _WA_MAPPING_VOLUME_BAR) 
        pixelrange -= 3;
      
    return ((xpos * valuerange) / pixelrange) + minValue;
}

int WaSlider::value2Pixel(int value)
{
    TQSize size = sizeHint();
    float min = (float) minValue;
    float max = (float) maxValue;
    float fmin = min;
    float fmax = max;
    if (min < 0) {
	fmin = -1 * fmin;
    }
    if (max < 0) {
	fmax = -1 * fmax;
    }
    float valuerange = fmin + fmax;
    float verhaeltnis = fmin / valuerange;
    float pixelrange = (float) (size.width() - slider_width);
    
    if(mapping == _WA_MAPPING_VOLUME_BAR) 
        pixelrange -= 3;
    
    float zeropoint = verhaeltnis * pixelrange;
    float anstieg = pixelrange / valuerange;

    float pixel = (float) value * anstieg + zeropoint;
    return (int) (pixel+0.5); // add 0.5 to round upwards if larger than x.5
}

void WaSlider::setRange(int min, int max) {
    minValue = min;
    maxValue = max;

    if (currentValue < min)
        currentValue = min;

    if (currentValue > max)
        currentValue = max;
}

void WaSlider::setValue(int value) {
    currentValue = value;

    updateSliderPos(currentValue);
    emit(valueChanged(value));
}

void WaSlider::cancelDrag() {
    lDragging = false;
    update();
}

#include "waSlider.moc"