summaryrefslogtreecommitdiffstats
path: root/kdesktop/kfileividesktop.cpp
blob: d5e367bc07bc7060184c57f47d944e4c6fa29069 (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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
/* This file is proposed to be part of the KDE base.
 * Copyright (C) 2003 Laur Ivan <laurivan@eircom.net>
 *
 * Many thanks to:
 *  - Bernardo Hung <deciare@gta.igs.net> for the enhanced shadow
 *  algorithm (currently used)
 *  - Tim Jansen <tim@tjansen.de> for the API updates and fixes.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License version 2 as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include <stdio.h>

#include <tqcolor.h>
#include <tqpalette.h>
#include <tqstring.h>
#include <tqpainter.h>
#include <tqstyle.h>
#include <kwordwrap.h>
#include <kiconview.h>
#include <kdebug.h>
#include <kglobalsettings.h>

#include <kshadowengine.h>
#include "kdesktopshadowsettings.h"
#include "kfileividesktop.h"

//#define DEBUG

/* Changelog:
 */

KFileIVIDesktop::KFileIVIDesktop(KonqIconViewWidget *iconview, KFileItem* fileitem,
				 int size, KShadowEngine *shadow) :
  KFileIVI(iconview, fileitem, size),
  m_selectedImage(0L),
  m_normalImage(0L),
  _selectedUID(0),
  _normalUID(0)
{
  m_shadow = shadow;
  oldText = "";

  calcRect( text() ); // recalculate rect including shadow
}

KFileIVIDesktop::~KFileIVIDesktop()
{
  delete m_selectedImage;
  delete m_normalImage;
}

void KFileIVIDesktop::calcRect( const TQString& _text )
{
    KIconViewItem::calcRect( _text );

    if ( !iconView() || !m_shadow ||
         !wordWrap() || !( static_cast<KDesktopShadowSettings *>
             ( m_shadow->shadowSettings() ) )->isEnabled() )
        return;

    int spread = shadowThickness();
    TQRect itemTextRect = textRect();
    TQRect itemRect = rect();

    itemTextRect.setBottom( itemTextRect.bottom() + spread );
    itemTextRect.setRight( itemTextRect.right() + spread );
    itemRect.setBottom( itemRect.bottom() + spread );
    itemRect.setRight( itemRect.right() + spread );

    setTextRect( itemTextRect );
    setItemRect( itemRect );
}

void KFileIVIDesktop::paintItem( TQPainter *p, const TQColorGroup &cg)
{
  TQColorGroup colors = updateColors(cg);

  TQIconView* view = iconView();
  Q_ASSERT( view );

  if ( !view )
    return;

  if ( !wordWrap() )
    return;

  p->save();

  // draw the pixmap as in KIconViewItem::paintItem(...)
  paintPixmap(p, colors);

  //
  // Paint the text as shadowed if the shadow is available
  //
  if (m_shadow != 0L && (static_cast<KDesktopShadowSettings *> (m_shadow->shadowSettings()))->isEnabled())
    drawShadowedText(p, colors);
  else {
    paintFontUpdate(p);
    paintText(p, colors);
  }

  p->restore();

  paintOverlay(p);
}

bool KFileIVIDesktop::shouldUpdateShadow(bool selected)
{
  unsigned long uid = (static_cast<KDesktopShadowSettings *> (m_shadow->shadowSettings()))->UID();
  TQString wrapped = wordWrap()->wrappedString();

  if (wrapped != oldText){
    oldText = wrapped;
    _selectedUID = _normalUID = 0;
  }

  if (selected == true)
    return (uid != _selectedUID);
  else
    return (uid != _normalUID);

  return false;
}



void KFileIVIDesktop::drawShadowedText( TQPainter *p, const TQColorGroup &cg )
{
  bool drawRoundedRect = KGlobalSettings::iconUseRoundedRect();

  int textX;
  if (drawRoundedRect == true)
    textX = textRect( FALSE ).x() + 4;
  else
    textX = textRect( FALSE ).x() + 2;
  int textY = textRect( FALSE ).y();
  int align = ((KIconView *) iconView())->itemTextPos() == TQIconView::Bottom
    ? AlignHCenter : AlignAuto;
  bool rebuild = shouldUpdateShadow(isSelected());

  KDesktopShadowSettings *settings = (KDesktopShadowSettings *) (m_shadow->shadowSettings());

  unsigned long uid = settings->UID();

  p->setFont(iconView()->font());
  paintFontUpdate(p);
  TQColor shadow;
  TQColor text;
  int spread = shadowThickness();

  if ( isSelected() && settings->selectionType() != KShadowSettings::InverseVideoOnSelection ) {
    text = cg.highlightedText();
    TQRect rect = textRect( false );
    rect.setRight( rect.right() - spread );
    rect.setBottom( rect.bottom() - spread + 1 );
    if (drawRoundedRect == true) {
      p->setBrush( TQBrush( cg.highlight() ) );
      p->setPen( TQPen( cg.highlight() ) );
      p->drawRoundRect( rect,
		      1000 / rect.width(),
		      1000 / rect.height() );
    }
    else {
      p->fillRect( textRect( false ), cg.highlight() );
    }
  }
  else {
    // use shadow
    if ( isSelected() ) {
      // inverse text and shadow colors
      shadow = settings->textColor();
      text = settings->bgColor();
      if ( rebuild ) {
        setSelectedImage( buildShadow( p, align, shadow ) );
        _selectedUID = uid;
      }
    }
    else {
      text = settings->textColor();
      shadow = ( settings->bgColor().isValid() ) ? settings->bgColor() :
               ( qGray( text.rgb() ) > 127 ) ? black : white;
      if (rebuild) {
        setNormalImage(buildShadow(p, align, shadow));
        _normalUID = uid;
      }
    }

    // draw the shadow
    int shadowX = textX - spread + settings->offsetX();
    int shadowY = textY - spread + settings->offsetY();

    p->drawImage(shadowX, shadowY,
      (isSelected()) ? *selectedImage() : *normalImage(),
      0, 0, -1, -1, DITHER_FLAGS);
  }

  // draw the text
  p->setPen(text);
  wordWrap()->drawText( p, textX, textY, align | KWordWrap::Truncate );
}


TQImage *KFileIVIDesktop::buildShadow( TQPainter *p, const int align,
                                      TQColor &shadowColor )
{
  TQPainter pixPainter;
  int spread = shadowThickness();

  TQPixmap textPixmap(textRect( FALSE ).width() + spread * 2 + 2,
    textRect( FALSE ).height() + spread * 2 + 2);

  textPixmap.fill(TQColor(0,0,0));
  textPixmap.setMask( textPixmap.createHeuristicMask(TRUE) );

  pixPainter.begin(&textPixmap);
  pixPainter.setPen(white);    // get the pen from the root painter
  pixPainter.setFont(p->font()); // get the font from the root painter
  wordWrap()->drawText( &pixPainter, spread, spread, align | KWordWrap::Truncate );
  pixPainter.end();

  return new TQImage(m_shadow->makeShadow(textPixmap, shadowColor));
}

int KFileIVIDesktop::shadowThickness() const
{
  return ( ( m_shadow->shadowSettings()->thickness() + 1 ) >> 1 ) + 1;
}