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75 * @file ffscrollinglabel.h
76 * @brief Contains a necessary class declaration.
78 * @author ComArch S.A.
82 * @brief A label with scrolling text.
85 #ifndef FFSCROLLINGLABEL_H
86 #define FFSCROLLINGLABEL_H
88 #include <QtGui/QWidget>
90 #include <QPushButton>
93 #include <QResizeEvent>
99 #include <QtDesigner/QDesignerExportWidget>
102 #include "ffabstractwidget.h"
103 #include "ffviewcache.h"
105 const int TIMER_DELAY = 200; ///< delay for timer responsible for scrolling
106 const QString DEFAULT_TEXT = "Default text"; ///< text printed on a label as default
107 const int DEFAULT_SCROLL_SPEED = 10; ///< number of pixels which defines step of scrolling
108 const int DEFAULT_END_SCROLL_DELAY = 10; ///< number of gaps when one of label's edge is visible
109 const int LABEL_SIZE_TINY = 6; ///< defines size of tiny label's font
110 const int LABEL_SIZE_SMALL = 10; ///< defines size of small label's font
111 const int LABEL_SIZE_NORMAL = 12; ///< defines size of normal label's font
112 const int LABEL_SIZE_LARGE = 16; ///< defines size of large label's font
113 const int LABEL_SIZE_HUGE = 24; ///< defines size of huge label's font
116 * @author ComArch S.A.
120 * @brief A label with scrolling text.
124 class FFScrollingLabel : public FFAbstractWidget
130 class QDESIGNER_WIDGET_EXPORT FFScrollingLabel : public FFAbstractWidget
134 Q_PROPERTY(QFont font READ font WRITE setFont)
135 Q_PROPERTY(QString text READ text WRITE setText)
136 Q_PROPERTY(bool resizable READ isResizable WRITE setResizable)
137 Q_PROPERTY(int scrollSpeed READ scrollSpeed WRITE setScrollSpeed)
138 Q_PROPERTY(int endScrollDelay READ endScrollDelay WRITE setEndScrollDelay)
139 Q_PROPERTY(QColor color READ color WRITE setColor)
140 Q_PROPERTY(bool fitToFont READ fitToFont WRITE setFitToFont)
141 Q_PROPERTY(bool smoothDisappear READ isSmoothDisappear WRITE setSmoothDisappear)
142 Q_PROPERTY(int timerDelay READ timerDelay WRITE setTimerDelay)
143 Q_PROPERTY(FFScrollingLabel::Alignment alignment READ alignment WRITE setAlignment)
147 FFScrollingLabel(QWidget* parent = 0);
148 FFScrollingLabel(QString text, QWidget *parent = 0);
149 FFScrollingLabel(QString text, QFont font, QWidget* parent = 0);
150 virtual ~FFScrollingLabel();
154 ALIGNMENT_LEFT = 0x2000, ///< label alignment to left
155 ALIGNMENT_RIGHT = 0x4000, ///< label alignment to right
156 ALIGNMENT_CENTER = 0x8000 ///< label alignment to center
160 QString text() const;
161 bool isResizable() const;
162 int scrollSpeed() const;
163 int endScrollDelay() const;
164 QColor color() const;
165 bool fitToFont() const;
166 bool isSmoothDisappear() const;
168 FFScrollingLabel::Alignment alignment();
170 void setFont(QFont font);
171 void setFont(int fontParam);
172 void setText(QString text);
173 void setResizable(bool resizable);
174 void setScrollSpeed(int scrollSpeed);
175 void setEndScrollDelay(int endScrollDelay);
176 void setColor(QColor color);
177 void setFitToFont(bool fitToFont);
178 void setScrollType(int type);
179 void setSmoothDisappear(bool smoothDisappear);
180 void setTimerDelay(int delay);
181 void setAlignment(FFScrollingLabel::Alignment alignment);
186 virtual void paintEvent(QPaintEvent *event);
187 virtual void resizeEvent(QResizeEvent *event);
188 virtual QSize sizeHint() const;
189 virtual void hideEvent(QHideEvent* event);
190 virtual void showEvent(QShowEvent* event);
193 QPainter* painter; ///< pointer to painter
194 QLinearGradient gradient; ///< stores gradient for label
195 QPen pen; ///< stores pen where gradient is set
196 QString text_; ///< stores text of label
197 QFont font_; ///< stores font of text
198 QTimer* timer; ///< timer used to animation
199 bool resizable_; ///< is true when font size should change with widget's size changes.
200 QColor color_; ///< stores color used to create gradient
202 int length_; ///< length of the text
203 int textOffset; ///< text's offset
204 int scrollSpeed_; ///< scoll's speed
205 int endScrollDelay_; ///< gap during one of edges is visible
206 int endScrollDelayIterationL; ///< contains value how many times text is in stopped state on left
207 int endScrollDelayIterationR; ///< contains value how many times text is in stopped state on right
208 bool fitToFont_; ///< if is true the widgets height is adjusted to font size
209 QString previousScrollType; ///< stores scrolling type
210 bool smoothDisappear_; ///< is true when the gradient at ends is set up
211 int timerDelay_; ///< defines how often text is repainted
212 Alignment alignment_; ///< stores text's alignment
213 int textStartPos; ///< contains start text's posiotion
215 void init(QString text, QFont font);
217 inline void changeGradient(qreal left, qreal right);
220 void scrollSideToSide();
223 #endif // FFSCROLLINGLABEL_H