Add the "mouse" example
This commit is contained in:
Markus Gans
parent
e66171ee73
commit
ef5ca7d5f8
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@ -1,3 +1,6 @@
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2017-03-19 Markus Gans <guru.mail@muenster.de>
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* Add the "mouse" example to illustrate mouse programming
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2017-03-17 Markus Gans <guru.mail@muenster.de>
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* More constant character pointers
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@ -455,6 +455,7 @@ void FLabel::draw()
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if ( isMonochron() )
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{
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setReverse(true);
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if ( hasEmphasis() )
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setBold(true);
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}
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@ -49,14 +49,6 @@ typedef long double lDouble;
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class FObject
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{
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public:
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struct timer_data
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{
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int id;
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timeval interval;
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timeval timeout;
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FObject* object;
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};
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// Typedef
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typedef std::list<FObject*> FObjectList;
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@ -93,6 +85,14 @@ class FObject
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bool delAllTimer();
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protected:
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struct timer_data
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{
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int id;
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timeval interval;
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timeval timeout;
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FObject* object;
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};
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// Typedef
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typedef std::vector<timer_data> TimerList;
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@ -763,6 +763,20 @@ void FVTerm::resizeArea ( int offset_left, int offset_top
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if ( ! area )
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return;
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if ( width == area->width
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&& height == area->height
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&& rsw == area->right_shadow
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&& bsh == area->bottom_shadow )
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{
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if ( offset_left != area->offset_left )
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area->offset_left = offset_left;
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if ( offset_top != area->offset_top )
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area->offset_top = offset_top;
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return;
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}
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area_size = (width+rsw) * (height+bsh);
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if ( area->height + area->bottom_shadow != height + bsh )
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519
test/mouse.cpp
519
test/mouse.cpp
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@ -2,6 +2,522 @@
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#include "fapp.h"
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#include "fdialog.h"
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#include "flabel.h"
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#include "fmessagebox.h"
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//----------------------------------------------------------------------
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// class ColorChooser
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//----------------------------------------------------------------------
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#pragma pack(push)
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#pragma pack(1)
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class ColorChooser : public FWidget
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{
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public:
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// Constructor
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explicit ColorChooser (FWidget* = 0);
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// Destructor
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~ColorChooser();
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// Accessors
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short getForeground();
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short getBackground();
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private:
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// Disable copy constructor
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ColorChooser (const ColorChooser&);
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// Disable assignment operator (=)
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ColorChooser& operator = (const ColorChooser&);
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// Method
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void draw();
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// Event handler
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void onMouseDown (FMouseEvent*);
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// Data Members
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short fg_color;
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short bg_color;
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};
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#pragma pack(pop)
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//----------------------------------------------------------------------
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ColorChooser::ColorChooser (FWidget* parent)
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: FWidget(parent)
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, fg_color(fc::White)
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, bg_color(fc::Black)
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{
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setSize (8, 12);
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setFixedSize (8, 12);
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unsetFocusable();
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if ( parent )
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{
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setForegroundColor(parent->getForegroundColor());
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setBackgroundColor(parent->getBackgroundColor());
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}
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// Text label
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FLabel* headline = new FLabel (this);
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headline->setGeometry(1, 1, 8, 1);
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headline->setText ("Color");
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headline->setEmphasis();
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headline->setAlignment (fc::alignCenter);
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}
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//----------------------------------------------------------------------
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ColorChooser::~ColorChooser()
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{ }
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//----------------------------------------------------------------------
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void ColorChooser::onMouseDown (FMouseEvent* ev)
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{
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int mouse_x = ev->getX();
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int mouse_y = ev->getY();
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if ( ev->getButton() == fc::MiddleButton )
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return;
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for (int c=0; c < 16; c++)
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{
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int xmin = 2 + (c / 8) * 3;
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int xmax = 4 + (c / 8) * 3;
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int y = 3 + c % 8;
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if ( mouse_x >= xmin && mouse_x <= xmax && mouse_y == y )
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{
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if ( ev->getButton() == fc::LeftButton )
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bg_color = short(c);
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else if ( ev->getButton() == fc::RightButton )
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fg_color = short(c);
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redraw();
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emitCallback("clicked");
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}
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}
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}
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//----------------------------------------------------------------------
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void ColorChooser::draw()
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{
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setColor();
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FWidget::drawBorder (1, 2, 8, 11);
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for (short c=0; c < 16; c++)
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{
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setPrintPos (2 + (c/8)*3, 3 + c%8);
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if ( c < 6 )
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setColor (fc::LightGray, c);
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else if ( c > 8 )
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setColor (fc::DarkGray, c);
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else
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setColor (fc::White, c);
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if ( c == bg_color )
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{
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print (' ');
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print (fc::Times);
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print (' ');
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}
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else
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print (" ");
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}
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}
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//----------------------------------------------------------------------
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inline short ColorChooser::getForeground()
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{
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return fg_color;
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}
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//----------------------------------------------------------------------
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inline short ColorChooser::getBackground()
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{
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return bg_color;
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}
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//----------------------------------------------------------------------
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// class Brushes
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//----------------------------------------------------------------------
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#pragma pack(push)
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#pragma pack(1)
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class Brushes : public FWidget
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{
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public:
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// Constructor
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explicit Brushes (FWidget* = 0);
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// Destructor
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~Brushes();
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// Accessor
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wchar_t getBrush();
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// Mutators
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void setForeground (short);
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void setBackground (short);
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private:
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// Disable copy constructor
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Brushes (const Brushes&);
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// Disable assignment operator (=)
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Brushes& operator = (const Brushes&);
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// Method
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void draw();
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// Event handler
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void onMouseDown (FMouseEvent*);
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// Data Members
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wchar_t brush;
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short fg_color;
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short bg_color;
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};
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#pragma pack(pop)
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//----------------------------------------------------------------------
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Brushes::Brushes (FWidget* parent)
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: FWidget(parent)
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, brush(L' ')
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, fg_color(fc::White)
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, bg_color(fc::Black)
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{
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setSize (8, 4);
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setFixedSize (8, 4);
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unsetFocusable();
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if ( parent )
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{
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setForegroundColor(parent->getForegroundColor());
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setBackgroundColor(parent->getBackgroundColor());
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}
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// Text label
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FLabel* headline = new FLabel (this);
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headline->setGeometry(1, 1, 8, 1);
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headline->setText ("Brush");
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headline->setEmphasis();
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headline->setAlignment (fc::alignCenter);
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}
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//----------------------------------------------------------------------
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Brushes::~Brushes()
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{ }
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//----------------------------------------------------------------------
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void Brushes::draw()
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{
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int pos;
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setColor();
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FWidget::drawBorder (1, 2, 8, 4);
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setColor (fg_color, bg_color);
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setPrintPos (2, 3);
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print(" ");
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print(FString(3, wchar_t(fc::MediumShade)));
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if ( brush == L' ' )
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pos = 0;
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else
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pos = 3;
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setColor();
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setPrintPos (3 + pos, 2);
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print(wchar_t(fc::BlackDownPointingTriangle));
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setPrintPos (3 + pos, 4);
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print(wchar_t(fc::BlackUpPointingTriangle));
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}
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//----------------------------------------------------------------------
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void Brushes::onMouseDown (FMouseEvent* ev)
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{
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int mouse_x = ev->getX();
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int mouse_y = ev->getY();
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if ( ev->getButton() != fc::LeftButton )
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return;
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if ( mouse_x >= 2 && mouse_x <= 4 && mouse_y == 3 )
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{
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brush = L' ';
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redraw();
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}
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else if ( mouse_x >= 5 && mouse_x <= 7 && mouse_y == 3 )
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{
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brush = wchar_t(fc::MediumShade);
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redraw();
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}
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}
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//----------------------------------------------------------------------
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inline wchar_t Brushes::getBrush()
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{
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return brush;
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}
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//----------------------------------------------------------------------
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inline void Brushes::setForeground (short color)
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{
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fg_color = color;
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}
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//----------------------------------------------------------------------
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inline void Brushes::setBackground (short color)
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{
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bg_color = color;
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}
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//----------------------------------------------------------------------
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// class MouseDraw
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//----------------------------------------------------------------------
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#pragma pack(push)
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#pragma pack(1)
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class MouseDraw : public FDialog
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{
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public:
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// Using-declaration
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using FWidget::setGeometry;
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// Constructor
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explicit MouseDraw (FWidget* = 0);
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// Destructor
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~MouseDraw();
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// Methods
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void setGeometry (int, int, int, int, bool = true);
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// Event handlers
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void onAccel (FAccelEvent*);
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void onClose (FCloseEvent*);
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private:
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// Disable copy constructor
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MouseDraw (const MouseDraw&);
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// Disable assignment operator (=)
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MouseDraw& operator = (const MouseDraw&);
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// Methods
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virtual void draw();
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void drawBrush (int, int, bool = false);
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void drawCanvas();
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void adjustSize();
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// Event handler
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void onMouseDown (FMouseEvent*);
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void onMouseMove (FMouseEvent*);
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// Callback methods
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void cb_colorChanged (FWidget*, data_ptr);
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// Data Members
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term_area* canvas;
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ColorChooser* c_chooser;
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Brushes* brush;
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};
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#pragma pack(pop)
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//----------------------------------------------------------------------
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MouseDraw::MouseDraw (FWidget* parent)
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: FDialog(parent)
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, canvas(0)
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, c_chooser()
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, brush()
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{
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setText ("Drawing with the mouse");
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c_chooser = new ColorChooser(this);
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c_chooser->setPos (1,1);
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c_chooser->addCallback
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(
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"clicked",
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_METHOD_CALLBACK (this, &MouseDraw::cb_colorChanged)
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);
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brush = new Brushes(this);
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brush->setPos (1,12);
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FPoint no_shadow(0,0);
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FRect scroll_geometry(0, 0, 1, 1);
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createArea (scroll_geometry, no_shadow, canvas);
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}
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//----------------------------------------------------------------------
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MouseDraw::~MouseDraw()
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{ }
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//----------------------------------------------------------------------
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void MouseDraw::setGeometry (int x, int y, int w, int h, bool adjust)
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{
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int old_w, old_h;
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FDialog::setGeometry (x, y, w, h, adjust);
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FPoint no_shadow(0,0);
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FRect scroll_geometry (0, 0, w-11, h-3);
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old_w = canvas->width;
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old_h = canvas->height;
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resizeArea (scroll_geometry, no_shadow, canvas);
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if ( old_w != canvas->width || old_h != canvas->height )
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{
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setColor(getForegroundColor(), getBackgroundColor());
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clearArea (canvas, ' ');
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}
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}
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//----------------------------------------------------------------------
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void MouseDraw::onAccel (FAccelEvent* ev)
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{
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close();
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ev->accept();
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}
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//----------------------------------------------------------------------
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void MouseDraw::onClose (FCloseEvent* ev)
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{
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int ret = FMessageBox::info ( this, "Quit"
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, "Do you really want\n"
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"to quit the program ?"
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, FMessageBox::Yes
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, FMessageBox::No );
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if ( ret == FMessageBox::Yes )
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ev->accept();
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else
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ev->ignore();
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}
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//----------------------------------------------------------------------
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void MouseDraw::draw()
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{
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int y_max = getHeight();
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FDialog::draw();
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setColor();
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setPrintPos (10, 2);
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print (wchar_t(fc::BoxDrawingsDownAndHorizontal));
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for (int y=3; y < y_max; y++)
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{
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setPrintPos (10, y);
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print (wchar_t(fc::BoxDrawingsVertical));
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}
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setPrintPos (10, y_max);
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print (wchar_t(fc::BoxDrawingsUpAndHorizontal));
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drawCanvas();
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}
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//----------------------------------------------------------------------
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void MouseDraw::drawBrush (int x, int y, bool swap_color)
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{
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int Cols = getWidth();
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int Lines = getHeight();
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if ( x > 10 && x < Cols && y > 2 && y < Lines )
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{
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if ( swap_color )
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setColor (c_chooser->getBackground(), c_chooser->getForeground());
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else
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setColor (c_chooser->getForeground(), c_chooser->getBackground());
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// set canvas print cursor position
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canvas->cursor_x = x - canvas->offset_left - 10;
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canvas->cursor_y = y - canvas->offset_top - 2;
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// print on canvas
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print (canvas, brush->getBrush());
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// copy canvas to the dialog
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drawCanvas();
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}
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}
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//----------------------------------------------------------------------
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void MouseDraw::drawCanvas()
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{
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int ax, ay, y_end, x_end;
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char_data* cc; // canvas character
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char_data* wc; // window character
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if ( ! hasPrintArea() )
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FVTerm::getPrintArea();
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if ( ! (hasPrintArea() && canvas) )
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return;
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ax = 9 + getTermX() - print_area->offset_left;
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ay = 1 + getTermY() - print_area->offset_top;
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y_end = canvas->height;
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x_end = canvas->width;
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int w_line_len = print_area->width + print_area->right_shadow;
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for (int y=0; y < y_end; y++) // line loop
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{
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cc = &canvas->text[y * x_end];
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wc = &print_area->text[(ay+y) * w_line_len + ax];
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std::memcpy (wc, cc, sizeof(char_data) * unsigned(x_end));
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if ( short(print_area->changes[ay+y].xmin) > ax )
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print_area->changes[ay+y].xmin = uInt(ax);
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if ( short(print_area->changes[ay+y].xmax) < ax+x_end-1 )
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print_area->changes[ay+y].xmax = uInt(ax+x_end-1);
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}
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print_area->has_changes = true;
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}
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//----------------------------------------------------------------------
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void MouseDraw::adjustSize()
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{
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int w = 60;
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int h = 18;
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int x = 1 + (getParentWidget()->getWidth() - w) / 2;
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int y = 1 + (getParentWidget()->getHeight() - h) / 2;
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setGeometry (x, y, w, h, false);
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FDialog::adjustSize();
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}
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//----------------------------------------------------------------------
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void MouseDraw::onMouseDown (FMouseEvent* ev)
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{
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FDialog::onMouseDown(ev);
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if ( ev->getButton() != fc::LeftButton
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&& ev->getButton() != fc::RightButton )
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return;
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drawBrush (ev->getX(), ev->getY(), ev->getButton() == fc::RightButton);
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}
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//----------------------------------------------------------------------
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void MouseDraw::onMouseMove (FMouseEvent* ev)
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||||
{
|
||||
FDialog::onMouseMove(ev);
|
||||
|
||||
if ( ev->getButton() != fc::LeftButton
|
||||
&& ev->getButton() != fc::RightButton )
|
||||
return;
|
||||
|
||||
drawBrush (ev->getX(), ev->getY(), ev->getButton() == fc::RightButton);
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
void MouseDraw::cb_colorChanged (FWidget*, data_ptr)
|
||||
{
|
||||
brush->setForeground (c_chooser->getForeground());
|
||||
brush->setBackground (c_chooser->getBackground());
|
||||
brush->redraw();
|
||||
}
|
||||
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// main part
|
||||
|
|
@ -12,8 +528,9 @@ int main (int argc, char* argv[])
|
|||
FApplication app(argc, argv);
|
||||
|
||||
// Create a simple dialog box
|
||||
FDialog mouse_draw(&app);
|
||||
MouseDraw mouse_draw(&app);
|
||||
mouse_draw.setGeometry (12, 4, 60, 18);
|
||||
mouse_draw.addAccelerator('q'); // press 'q' to quit
|
||||
|
||||
app.setMainWidget(&mouse_draw);
|
||||
mouse_draw.show();
|
||||
|
|
|
|||
Loading…
Reference in New Issue