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NCBI C++ ToolKit: src/gui/widgets/gl/mouse_zoom_handler.cpp Source File

m_CursorId(wxCURSOR_ARROW),

m_PanOnMouseDown(

),

m_HasCapture(

),

m_ScaleColor(0.0

, 0.5

, 0.0

, 0.3

),

m_TickColor(1.0

, 1.0

, 1.0

),

m_RectColor(0.0

, 0.5

, 0.0

, 0.1

)

AttrGuard(GL_LINE_BIT | GL_ENABLE_BIT | GL_POLYGON_BIT | GL_HINT_BIT);

gl.

(GL_LINE_STRIP);

gl.

(GL_LINES);

(

= start_i;

<= end_i;

++ ) {

x2 = rc_vp.

();

gl.

(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

gl.

(x1, y1, x2, y2);

gl.

(GL_LINE_STIPPLE);

gl.

(GL_LINES);

gl.

(GL_POLYGON_SMOOTH);

glHint(GL_POLYGON_SMOOTH_HINT, GL_FASTEST);

d_x = x2 - x1;

d_y = y2 - y1;

angle = 90.0 * atan2(d_y, d_x) / atan2(1.0, 0.0);

hyp = sqrt(d_x * d_x + d_y * d_y);

gl.

(angle, 0.0, 0.0, 1.0);

gl.

(GL_QUADS);

gl.

(-angle, 0.0, 0.0, 1.0);

gl.

(GL_TRIANGLE_STRIP);

gl.

(x_c - half, y_c + half);

gl.

(x_c - half, y_c - half);

gl.

(GL_LINE_STRIP);

gl.

(x_c - half, y_c - half);

gl.

(x_c - half, y_c + half);

(wxGetKeyState(wxKeyCode(

))) {

}

(wxGetKeyState(wxKeyCode(

))) {

}

(wxGetKeyState(wxKeyCode(

))) {

( k=

; k<=

; ++k) {

(wxGetKeyState((wxKeyCode)k))

( k=

; k<=

; ++k) {

(wxGetKeyState((wxKeyCode)k))

(wxGetKeyState(WXK_SHIFT) ||

wxGetKeyState(WXK_ALT) ||

wxGetKeyState(WXK_CONTROL) ||

wxGetKeyState(WXK_COMMAND))

(event.GetKeyCode()) {

(ready_st !=

) {

wxPoint ms_pos =

.GetPosition();

(!wxGetKeyState(wxKeyCode(

))) {

wxPoint pos =

.GetPosition();

(event.Dragging()) {

wxPoint pos =

.GetPosition();

( ready_st !=

){

(x2 != x1 || y2 != y1) {

left =

(x1, x2);

right =

(x1, x2);

bottom =

(y1, y2);

top =

(y1, y2);

sc = exp(norm);

CGlAttrGuard - guard class for restoring OpenGL attributes.

CMouseZoomHandler provides support for mouse-driven zoom and pan operations.

void x_OnChangeZoomRectPan(const wxPoint &pos)

void x_OnChangeScale(int d_y)

d_y is the absolute shift in pixels from the position where m_StartNorm have been initialized

void OnOtherMouseEvents(wxMouseEvent &event)

virtual void SetHost(IMouseZoomHandlerHost *pHost)

int x_NormToPixels(TModelUnit norm) const

void x_RenderZoomRect(CGlPane &pane)

EKeyState x_GetKeyState()

void OnMotion(wxMouseEvent &event)

void x_OnChangePan(const wxPoint &ms_pos)

void x_SwitchToReadyState(EState new_state, const wxPoint &ms_pos)

signal handlers - functions doing the real job

void x_DrawMarker(bool fill, int x_c, int y_c, int half)

void x_OnEndZoomRect(EState new_state)

TModelUnit x_ScaleToNorm(TModelUnit scale) const

helper functions

IMouseZoomHandlerHost * m_Host

void OnKeyUp(wxKeyEvent &event)

virtual wxEvtHandler * GetEvtHandler()

void x_OnSelectCursor(void)

void OnKeyDown(wxKeyEvent &event)

void OnMiddleUp(wxMouseEvent &event)

void OnLeftUp(wxMouseEvent &event)

virtual void SetMode(EMode mode)

void OnKillFocus(wxFocusEvent &event)

void OnMouseWheel(wxMouseEvent &event)

void x_RenderPan(CGlPane &pane)

void x_OnEndPan(EState new_state)

virtual IGenericHandlerHost * GetGenericHost()

void x_SwitchToActiveState(EState state, const wxPoint &ms_pos)

TModelUnit x_NormToScale(TModelUnit norm) const

void x_OnEndScale(EState new_state)

void x_RenderScale(CGlPane &pane)

void OnMiddleDown(wxMouseEvent &event)

virtual void SetPane(CGlPane *pane)

void OnMouseCaptureLost(wxMouseCaptureLostEvent &evt)

void x_DrawTicks(int center_x, int y, int tick_w)

void OnLeftDown(wxMouseEvent &event)

virtual void Render(CGlPane &Pane)

virtual ~CMouseZoomHandler()

virtual void GHH_ReleaseMouse()=0

releases captured mouse

virtual void GHH_Redraw()=0

redraws the Host and the handler

virtual void GHH_CaptureMouse()=0

captures mouse events in the hosting window for D&D

virtual void GHH_SetCursor(const wxCursor &cursor)=0

changes the cursor in the hosting window

Interface IMouseZoomHandlerHost represents a context in which CMouseZoomHandler functions.

virtual void MZHH_ZoomRect(const TModelRect &rc)=0

virtual void MZHH_SetScale(TModelUnit scale, const TModelPoint &point)=0

virtual TVPUnit MZHH_GetVPPosByY(int y) const =0

converts window coord to Viewport coord

virtual void MZHH_EndOp()=0

virtual TModelUnit MZHH_GetScale(EScaleType type)=0

virtual void MZHH_Scroll(TModelUnit d_x, TModelUnit d_y)=0

Include a standard set of the NCBI C++ Toolkit most basic headers.

void swap(NCBI_NS_NCBI::pair_base_member< T1, T2 > &pair1, NCBI_NS_NCBI::pair_base_member< T1, T2 > &pair2)

virtual void Translated(GLdouble x, GLdouble y, GLdouble z)=0

CGlRect & IntersectWith(const CGlRect &r)

virtual void Enable(GLenum glstate)=0

virtual void LineStipple(GLint factor, GLushort pattern)=0

Set line stipple pattern: glLineStipple(). Deprecated in gl 3.2+.

virtual void Begin(GLenum mode)=0

Start rendering.

virtual void BlendFunc(GLenum sfactor, GLenum dfactor)=0

Options to be used when GL_BLEND is enabled.

TModelPoint UnProject(TVPUnit m_x, TVPUnit m_y) const

IRender & GetGl()

convenience function for getting current render manager

void Vertex2d(GLdouble x, GLdouble y)

TVPRect & GetViewport(void)

TModelUnit UnProjectX(TVPUnit m_x) const

TModelRect & GetModelLimitsRect(void)

virtual void Rotated(GLdouble angle, GLdouble x, GLdouble y, GLdouble z)=0

virtual void End()=0

Finish rendering (create buffer and send to renderer)

virtual void PolygonMode(GLenum face, GLenum mode)=0

Set the polygon rasterization mode.

TModelUnit UnProjectY(TVPUnit m_y) const

virtual void Disable(GLenum glstate)=0

glDisable()

virtual void LineWidth(GLfloat w)=0

Set line width for drawing: glLineWidth()

virtual void ColorC(const CRgbaColor &c)=0

Set current color (glColor{3,4}{f,d}{v,})

void Rectd(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2)

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

unsigned int

A callback function used to compare two keys in a database.

static const int kArrowHeadW

static const int kArrowHeadL

static const int kArrowBodyW

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