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Optimized mouse string parser
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@gansm
gansm committed Nov 10, 2023
1 parent 57dadcf commit afc4de1
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Showing 8 changed files with 213 additions and 162 deletions.
3 changes: 3 additions & 0 deletions ChangeLog
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Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
2023-11-11 Markus Gans <guru.mail@muenster.de>
* Optimized mouse string parser

2023-11-03 Markus Gans <guru.mail@muenster.de>
* Reorganize the data structure of widget color theme

Expand Down
233 changes: 128 additions & 105 deletions final/input/fmouse.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -662,10 +662,7 @@ void FMouseX11::processEvent (const TimeValue& time)
setMoveState (mouse_position, btn);
setButtonState (btn & button_mask, time);

if ( mouse_position == getNewPos()
&& ! isWheelUp() && ! isWheelDown()
&& ! isWheelLeft() && ! isWheelRight()
&& x11_button_state == uChar(btn) )
if ( noChanges(mouse_position, uChar(btn)) )
{
clearEvent();
x11_mouse[0] = '\0'; // Delete already interpreted data
Expand Down Expand Up @@ -707,7 +704,7 @@ void FMouseX11::setMoveState (const FPoint& mouse_position, int btn) noexcept
}

//----------------------------------------------------------------------
bool FMouseX11::isMouseClickButton (const int btn) const noexcept
inline bool FMouseX11::isMouseClickButton (const int btn) const noexcept
{
return btn == button1_pressed
|| btn == button2_pressed
Expand All @@ -718,14 +715,25 @@ bool FMouseX11::isMouseClickButton (const int btn) const noexcept
}

//----------------------------------------------------------------------
bool FMouseX11::isMouseWheelButton (const int btn) const noexcept
inline bool FMouseX11::isMouseWheelButton (const int btn) const noexcept
{
return btn == button_up
|| btn == button_down
|| btn == button_left
|| btn == button_right;
}

//----------------------------------------------------------------------
inline auto FMouseX11::noChanges (const FPoint& mouse_position, uChar btn) const noexcept -> bool
{
return mouse_position == getNewPos()
&& ! isWheelUp()
&& ! isWheelDown()
&& ! isWheelLeft()
&& ! isWheelRight()
&& btn == x11_button_state;
}

//----------------------------------------------------------------------
void FMouseX11::handleMouseClickButton ( int btn
, const TimeValue& time) noexcept
Expand Down Expand Up @@ -900,55 +908,26 @@ void FMouseSGR::setRawData (FKeyboard::keybuffer& fifo_buf) noexcept
void FMouseSGR::processEvent (const TimeValue& time)
{
const auto& mouse_position = getPos();
sInt16 x{0};
sInt16 y{0};
int btn{0};

// Parse the SGR mouse string
const char* p = sgr_mouse.data();

// Parse button
if ( ! parseNumberIf (p, btn, [] (char ch) { return ch != ';'; }) )
{
clearEvent();
sgr_mouse[0] = '\0'; // Delete already interpreted data
return;
}
Tokens token{};

if ( *p ) p++; // ship one character after the number

// Parse x-value
if ( ! parseNumberIf (p, x, [] (char ch) { return ch != ';'; }) )
if ( parseSGRMouseString(token) )
{
clearEvent();
sgr_mouse[0] = '\0'; // Delete already interpreted data
return;
}

if ( *p ) p++; // ship one character after the number

// Parse y-value
if ( ! parseNumberIf (p, y, [] (char ch) { return ch != 'M' && ch != 'm'; }) )
{
clearEvent();
sgr_mouse[0] = '\0'; // Delete already interpreted data
return;
}

setNewPos (x, y); // Update the mouse state
setNewPos (token.x, token.y); // Update the mouse state
clearButtonState();
setKeyState (btn);
setMoveState (mouse_position, btn);
setKeyState (token.btn);
setMoveState (mouse_position, token.btn);

if ( *p == pressed )
setPressedButtonState (btn & button_mask, time);
else // *p == released
setReleasedButtonState (btn & button_mask);
if ( *token.p == pressed )
setPressedButtonState (token.btn & button_mask, time);
else // *token.p == released
setReleasedButtonState (token.btn & button_mask);

if ( mouse_position == getNewPos()
&& ! isWheelUp() && ! isWheelDown()
&& ! isWheelLeft() && ! isWheelRight()
&& sgr_button_state == uChar(((*p & 0x20) << 2) + btn) )
if ( noChanges(mouse_position, uChar(((*token.p & 0x20) << 2) + token.btn)) )
{
clearEvent();
sgr_mouse[0] = '\0'; // Delete already interpreted data
Expand All @@ -958,7 +937,7 @@ void FMouseSGR::processEvent (const TimeValue& time)
setEvent();
useNewPos();
// Get the button state from string
sgr_button_state = uChar(((*p & 0x20) << 2) + btn);
sgr_button_state = uChar(((*token.p & 0x20) << 2) + token.btn);
// Delete already interpreted data
sgr_mouse[0] = '\0';
}
Expand Down Expand Up @@ -989,7 +968,7 @@ void FMouseSGR::setMoveState (const FPoint& mouse_position, int btn) noexcept
}

//----------------------------------------------------------------------
bool FMouseSGR::isMouseClickButton (const int btn) const noexcept
inline bool FMouseSGR::isMouseClickButton (const int btn) const noexcept
{
return btn == button1
|| btn == button2
Expand All @@ -1000,14 +979,49 @@ bool FMouseSGR::isMouseClickButton (const int btn) const noexcept
}

//----------------------------------------------------------------------
bool FMouseSGR::isMouseWheelButton (const int btn) const noexcept
inline bool FMouseSGR::isMouseWheelButton (const int btn) const noexcept
{
return btn == button_up
|| btn == button_down
|| btn == button_left
|| btn == button_right;
}

//----------------------------------------------------------------------
inline bool FMouseSGR::parseSGRMouseString (FMouseSGR::Tokens& token) const noexcept
{
// Parse the SGR mouse string
token.p = sgr_mouse.data();

// Parse button
if ( ! parseNumberIf (token.p, token.btn, [] (char ch) { return ch != ';'; }) )
return true;

if ( *token.p )
token.p++; // ship one character after the number

// Parse x-value
if ( ! parseNumberIf (token.p, token.x, [] (char ch) { return ch != ';'; }) )
return true;

if ( *token.p )
token.p++; // ship one character after the number

// Parse y-value
return ! parseNumberIf (token.p, token.y, [] (char ch) { return ch != 'M' && ch != 'm'; });
}

//----------------------------------------------------------------------
inline auto FMouseSGR::noChanges (const FPoint& mouse_position, uChar btn) const noexcept -> bool
{
return mouse_position == getNewPos()
&& ! isWheelUp()
&& ! isWheelDown()
&& ! isWheelLeft()
&& ! isWheelRight()
&& btn == sgr_button_state;
}

//----------------------------------------------------------------------
void FMouseSGR::handleMouseClickButton ( int btn
, const TimeValue& time) noexcept
Expand Down Expand Up @@ -1183,69 +1197,22 @@ void FMouseUrxvt::processEvent (const TimeValue& time)
// Parse and interpret the X11 xterm mouse string (Urxvt-Mode)

const auto& mouse_position = getPos();
sInt16 x{0};
sInt16 y{0};
int btn{0};

// Parse the Urxvt mouse string
const char* p = urxvt_mouse.data();
bool x_neg{false};
bool y_neg{false};

// Parse button
if ( ! parseNumberIf (p, btn, [] (char ch) { return ch != ';'; }) )
{
clearEvent();
urxvt_mouse[0] = '\0'; // Delete already interpreted data
return;
}
Tokens token{};

if ( *++p == '-' )
{
p++;
x_neg = true;
}

// Parse x-value
if ( ! parseNumberIf (p, x, [] (char ch) { return ch != ';'; }) )
{
clearEvent();
urxvt_mouse[0] = '\0'; // Delete already interpreted data
return;
}

if ( *++p == '-' )
{
p++;
y_neg = true;
}

// Parse y-value
if ( ! parseNumberIf (p, y, [] (char ch) { return ch != 'M'; }) )
if ( parseUrxvtMouseString(token) )
{
clearEvent();
urxvt_mouse[0] = '\0'; // Delete already interpreted data
return;
}

if ( x_neg || x == 0 )
x = 1;

if ( y_neg || y == 0 )
y = 1;

x = std::min(x, sInt16(getMaxWidth()));
y = std::min(y, sInt16(getMaxHeight()));
setNewPos (x, y);
adjustAndSetPosition (token);
clearButtonState();
setKeyState (btn);
setMoveState (mouse_position, btn);
setButtonState (btn & button_mask, time);
setKeyState (token.btn);
setMoveState (mouse_position, token.btn);
setButtonState (token.btn & button_mask, time);

if ( mouse_position == getNewPos()
&& ! isWheelUp() && ! isWheelDown()
&& ! isWheelLeft() && ! isWheelRight()
&& urxvt_button_state == uChar(btn) )
if ( noChanges(mouse_position, uChar(token.btn)) )
{
clearEvent();
urxvt_mouse[0] = '\0'; // Delete already interpreted data
Expand All @@ -1254,7 +1221,7 @@ void FMouseUrxvt::processEvent (const TimeValue& time)

setEvent();
useNewPos();
urxvt_button_state = uChar(btn);
urxvt_button_state = uChar(token.btn);
// Delete already interpreted data
urxvt_mouse[0] = '\0';
}
Expand Down Expand Up @@ -1286,7 +1253,7 @@ void FMouseUrxvt::setMoveState (const FPoint& mouse_position, int btn) noexcept
}

//----------------------------------------------------------------------
bool FMouseUrxvt::isMouseClickButton (const int btn) const noexcept
inline bool FMouseUrxvt::isMouseClickButton (const int btn) const noexcept
{
return btn == button1_pressed
|| btn == button2_pressed
Expand All @@ -1297,14 +1264,70 @@ bool FMouseUrxvt::isMouseClickButton (const int btn) const noexcept
}

//----------------------------------------------------------------------
bool FMouseUrxvt::isMouseWheelButton (const int btn) const noexcept
inline bool FMouseUrxvt::isMouseWheelButton (const int btn) const noexcept
{
return btn == button_up
|| btn == button_down
|| btn == button_left
|| btn == button_right;
}

//----------------------------------------------------------------------
inline bool FMouseUrxvt::parseUrxvtMouseString (FMouseUrxvt::Tokens& token) const noexcept
{

// Parse the Urxvt mouse string
token.p = urxvt_mouse.data();

// Parse button
if ( ! parseNumberIf (token.p, token.btn, [] (char ch) { return ch != ';'; }) )
return true;

if ( *++token.p == '-' )
{
token.p++;
token.x_neg = true;
}

// Parse x-value
if ( ! parseNumberIf (token.p, token.x, [] (char ch) { return ch != ';'; }) )
return true;

if ( *++token.p == '-' )
{
token.p++;
token.y_neg = true;
}

// Parse y-value
return ! parseNumberIf (token.p, token.y, [] (char ch) { return ch != 'M'; });
}

//----------------------------------------------------------------------
inline void FMouseUrxvt::adjustAndSetPosition (FMouseUrxvt::Tokens& token)
{
if ( token.x_neg || token.x == 0 )
token.x = 1;

if ( token.y_neg || token.y == 0 )
token.y = 1;

token.x = std::min(token.x, sInt16(getMaxWidth()));
token.y = std::min(token.y, sInt16(getMaxHeight()));
setNewPos(token.x, token.y);
}

//----------------------------------------------------------------------
inline auto FMouseUrxvt::noChanges (const FPoint& mouse_position, uChar btn) const noexcept -> bool
{
return mouse_position == getNewPos()
&& ! isWheelUp()
&& ! isWheelDown()
&& ! isWheelLeft()
&& ! isWheelRight()
&& urxvt_button_state == uChar(btn);
}

//----------------------------------------------------------------------
void FMouseUrxvt::handleMouseClickButton ( int btn
, const TimeValue& time) noexcept
Expand Down
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