/* * spinbox2.h - spin box with extra pair of spin buttons * Program: kalarm * Copyright © 2001-2008 by David Jarvie * * 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; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef SPINBOX2_H #define SPINBOX2_H #include "spinbox.h" #include #include #include class SpinMirror; class ExtraSpinBox; /** * @short Spin box with a pair of spin buttons on either side. * * The SpinBox2 class provides a spin box with two pairs of spin buttons, one on either side. * * It is designed as a base class for implementing such facilities as time spin boxes, where * the hours and minutes values are separately displayed in the edit field. When the * appropriate step increments are configured, the left spin arrows can then be used to * change the hours value, while the right spin arrows can be used to change the minutes * value. * * Rather than using SpinBox2 directly for time entry, use in preference TimeSpinBox or * TimeEdit classes which are tailored from SpinBox2 for this purpose. * * Separate step increments may optionally be specified for use when the shift key is * held down. Typically these would be larger than the normal steps. Then, when the user * clicks the spin buttons, he/she can increment or decrement the value faster by holding * the shift key down. * * The widget may be set as read-only. This has the same effect as disabling it, except * that its appearance is unchanged. * * @author David Jarvie */ class SpinBox2 : public QFrame { Q_OBJECT public: /** Constructor. * @param parent The parent object of this widget. */ explicit SpinBox2(QWidget* parent = 0); /** Constructor. * @param minValue The minimum value which the spin box can have. * @param maxValue The maximum value which the spin box can have. * @param pageStep The (unshifted) step interval for the left-hand spin buttons. * @param parent The parent object of this widget. */ SpinBox2(int minValue, int maxValue, int pageStep = 1, QWidget* parent = 0); /** Sets whether the spin box can be changed by the user. * @param readOnly True to set the widget read-only, false to set it read-write. */ virtual void setReadOnly(bool readOnly); /** Returns true if the widget is read only. */ bool isReadOnly() const { return mSpinbox->isReadOnly(); } /** Sets whether the spin box value text should be selected when its value is stepped. */ void setSelectOnStep(bool sel) { mSpinbox->setSelectOnStep(sel); } /** Sets whether the spin button pairs should be reversed for a right-to-left language. * The default is for them to be reversed. */ void setReverseWithLayout(bool reverse); /** Returns whether the spin button pairs will be reversed for a right-to-left language. */ bool reverseButtons() const { return mRightToLeft && !mReverseWithLayout; } /** Returns the spin box's text, including any prefix() and suffix(). */ QString text() const { return mSpinbox->text(); } /** Returns the prefix for the spin box's text. */ QString prefix() const { return mSpinbox->prefix(); } /** Returns the suffix for the spin box's text. */ QString suffix() const { return mSpinbox->suffix(); } /** Sets the prefix which is prepended to the start of the displayed text. */ void setPrefix(const QString& text) { mSpinbox->setPrefix(text); } /** Sets the suffix which is prepended to the start of the displayed text. */ void setSuffix(const QString& text) { mSpinbox->setSuffix(text); } /** Returns the spin box's text with no prefix(), suffix() or leading or trailing whitespace. */ QString cleanText() const { return mSpinbox->cleanText(); } /** Sets the special-value text which, if non-null, is displayed instead of a numeric * value when the current value is equal to minimum(). */ void setSpecialValueText(const QString& text) { mSpinbox->setSpecialValueText(text); } /** Returns the special-value text which, if non-null, is displayed instead of a numeric * value when the current value is equal to minimum(). */ QString specialValueText() const { return mSpinbox->specialValueText(); } /** Sets whether it is possible to step the value from the highest value to the * lowest value and vice versa. */ void setWrapping(bool on); /** Returns whether it is possible to step the value from the highest value to the * lowest value and vice versa. */ bool wrapping() const { return mSpinbox->wrapping(); } /** Set the text alignment of the widget */ void setAlignment(Qt::Alignment a) { mSpinbox->setAlignment(a); } /** Sets the button symbols to use (arrows or plus/minus). */ void setButtonSymbols(QSpinBox::ButtonSymbols); /** Returns the button symbols currently in use (arrows or plus/minus). */ QSpinBox::ButtonSymbols buttonSymbols() const { return mSpinbox->buttonSymbols(); } /** Determine whether the current input is valid. */ virtual QValidator::State validate(QString&, int& /*pos*/) const { return QValidator::Acceptable; } virtual QSize sizeHint() const; virtual QSize minimumSizeHint() const; /** Returns the minimum value of the spin box. */ int minimum() const { return mMinValue; } /** Returns the maximum value of the spin box. */ int maximum() const { return mMaxValue; } /** Sets the minimum value of the spin box. */ virtual void setMinimum(int val); /** Sets the maximum value of the spin box. */ virtual void setMaximum(int val); /** Sets the minimum and maximum values of the spin box. */ void setRange(int minValue, int maxValue) { setMinimum(minValue); setMaximum(maxValue); } /** Returns the current value of the spin box. */ int value() const { return mSpinbox->value(); } /** Returns the specified value clamped to the range of the spin box. */ int bound(int val) const; /** Returns the geometry of the right-hand "up" button. */ QRect upRect() const { return mSpinbox->upRect(); } /** Returns the geometry of the right-hand "down" button. */ QRect downRect() const { return mSpinbox->downRect(); } /** Returns the geometry of the left-hand "up" button. */ QRect up2Rect() const; /** Returns the geometry of the left-hand "down" button. */ QRect down2Rect() const; /** Returns the unshifted step increment for the right-hand spin buttons, * i.e. the amount by which the spin box value changes when a right-hand * spin button is clicked without the shift key being pressed. */ int singleStep() const { return mSingleStep; } /** Returns the shifted step increment for the right-hand spin buttons, * i.e. the amount by which the spin box value changes when a right-hand * spin button is clicked while the shift key is pressed. */ int singleShiftStep() const { return mSingleShiftStep; } /** Returns the unshifted step increment for the left-hand spin buttons, * i.e. the amount by which the spin box value changes when a left-hand * spin button is clicked without the shift key being pressed. */ int pageStep() const { return mPageStep; } /** Returns the shifted step increment for the left-hand spin buttons, * i.e. the amount by which the spin box value changes when a left-hand * spin button is clicked while the shift key is pressed. */ int pageShiftStep() const { return mPageShiftStep; } /** Sets the unshifted step increment for the right-hand spin buttons, * i.e. the amount by which the spin box value changes when a right-hand * spin button is clicked without the shift key being pressed. */ void setSingleStep(int step); /** Sets the unshifted step increments for the two pairs of spin buttons, * i.e. the amount by which the spin box value changes when a spin button * is clicked without the shift key being pressed. * @param line The step increment for the right-hand spin buttons. * @param page The step increment for the left-hand spin buttons. */ void setSteps(int line, int page); /** Sets the shifted step increments for the two pairs of spin buttons, * i.e. the amount by which the spin box value changes when a spin button * is clicked while the shift key is pressed. * @param line The shift step increment for the right-hand spin buttons. * @param page The shift step increment for the left-hand spin buttons. */ void setShiftSteps(int line, int page); /** Increments the current value by adding the unshifted step increment for * the left-hand spin buttons. */ void addPage() { addValue(mPageStep); } /** Decrements the current value by subtracting the unshifted step increment for * the left-hand spin buttons. */ void subtractPage() { addValue(-mPageStep); } /** Increments the current value by adding the unshifted step increment for * the right-hand spin buttons. */ void addSingle() { addValue(mSingleStep); } /** Decrements the current value by subtracting the unshifted step increment for * the right-hand spin buttons. */ void subtractSingle() { addValue(-mSingleStep); } /** Adjusts the current value by adding @p change. */ void addValue(int change) { mSpinbox->addValue(change); } /** Increments the current value by adding the unshifted increment for * the right-hand spin buttons. */ virtual void stepBy(int increment) { addValue(increment); } public slots: /** Sets the current value to @p val. */ void setValue(int val) { mSpinbox->setValue(val); } /** Increments the current value by adding the unshifted step increment for * the left-hand spin buttons. */ virtual void pageUp() { addValue(mPageStep); } /** Decrements the current value by subtracting the unshifted step increment for * the left-hand spin buttons. */ virtual void pageDown() { addValue(-mPageStep); } /** Selects all the text in the spin box's editor. */ void selectAll() { mSpinbox->selectAll(); } /** Sets whether the widget is enabled. */ virtual void setEnabled(bool enabled); signals: /** Signal which is emitted whenever the value of the spin box changes. */ void valueChanged(int value); /** Signal which is emitted whenever the value of the spin box changes. */ void valueChanged(const QString& valueText); protected: virtual QString textFromValue(int v) const { return mSpinbox->textFromVal(v); } virtual int valueFromText(const QString& t) const { return mSpinbox->valFromText(t); } virtual void paintEvent(QPaintEvent*); virtual void showEvent(QShowEvent*); virtual void styleChange(QStyle&); virtual void getMetrics() const; mutable int wUpdown2; // width of second spin widget mutable int wSpinboxHide; // width at left of 'mSpinbox' hidden by second spin widget mutable QPoint mButtonPos; // position of buttons inside mirror widget protected slots: virtual void valueChange(); virtual void stepPage(int); private slots: void updateMirrorButtons(); void updateMirrorFrame(); void paintTimer(); private: void init(); void arrange(); void updateMirror(); bool eventFilter(QObject*, QEvent*); void spinboxResized(QResizeEvent*); void setUpdown2Size(); int whichButton(QObject* spinWidget, const QPoint&); void setShiftStepping(bool on); // Visible spin box class. // Declared here to allow use of mSpinBox in inline methods. class MainSpinBox : public SpinBox { public: MainSpinBox(SpinBox2* sb2, QWidget* parent) : SpinBox(parent), owner(sb2) { } MainSpinBox(int minValue, int maxValue, SpinBox2* sb2, QWidget* parent) : SpinBox(minValue, maxValue, parent), owner(sb2) { } virtual QString textFromValue(int v) const { return owner->textFromValue(v); } virtual int valueFromText(const QString& t) const { return owner->valueFromText(t); } QString textFromVal(int v) const { return SpinBox::textFromValue(v); } int valFromText(const QString& t) const { return SpinBox::valueFromText(t); } virtual int shiftStepAdjustment(int oldValue, int shiftStep); virtual QValidator::State validate(QString& text, int& pos) const { return owner->validate(text, pos); } protected: virtual void resizeEvent(QResizeEvent* e) { owner->spinboxResized(e); SpinBox::resizeEvent(e); } private: SpinBox2* owner; // owner SpinBox2 }; enum { NO_BUTTON = -1, UP, DOWN, UP2, DOWN2 }; static int mRightToLeft; // widgets are mirrored right to left QFrame* mSpinboxFrame; // contains the main spin box ExtraSpinBox* mUpdown2; // the extra pair of spin buttons MainSpinBox* mSpinbox; // the visible spin box SpinMirror* mSpinMirror; // image of the extra pair of spin buttons int mMinValue; int mMaxValue; int mSingleStep; // right button increment int mSingleShiftStep; // right button increment with shift pressed int mPageStep; // left button increment int mPageShiftStep; // left button increment with shift pressed bool mReverseWithLayout; // reverse button positions if reverse layout (default = true) friend class MainSpinBox; }; #endif // SPINBOX2_H // vim: et sw=4: