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DisplayList.cpp
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// DisplayList.cpp : implementation of class CDisplayList
//
// this is a linked-list of display elements
// each element is a primitive graphics object such as a line-segment,
// circle, annulus, etc.
//
#include "stdafx.h"
#include <math.h>
// dimensions passed to DisplayList from the application are in PCBU (i.e. nm)
// since the Win95/98 GDI uses 16-bit arithmetic, PCBU must be scaled to DU (i.e. mils)
//
//#define PCBU_PER_DU PCBU_PER_WU
//#define MIL_PER_DU NM_PER_MIL/PCBU_PER_DU // conversion from mils to display units
//#define DU_PER_MIL PCBU_PER_DU/NM_PER_MIL // conversion from display units to mils
#define DL_MAX_LAYERS 32
#define HILITE_POINT_W 10 // size/2 of selection box for points (mils)
// constructor
//
CDisplayList::CDisplayList( int pcbu_per_wu )
{
m_pcbu_per_wu = pcbu_per_wu;
// create lists for all layers
for( int layer=0; layer<MAX_LAYERS; layer++ )
{
// linked list for layer
m_start[layer].prev = 0; // first element
m_start[layer].next = &m_end[layer];
m_start[layer].magic = 0;
m_end[layer].next = 0; // last element
m_end[layer].prev = &m_start[layer];
m_end[layer].magic = 0;
// default colors, these should be overwritten with actual colors
m_rgb[layer][0] = layer*63; // R
m_rgb[layer][1] = (layer/4)*127; // G
m_rgb[layer][2] = (layer/8)*63; // B
// default order
m_layer_in_order[layer] = layer; // will be drawn from highest to lowest
m_order_for_layer[layer] = layer;
}
// miscellaneous
m_drag_flag = 0;
m_drag_num_lines = 0;
m_drag_line_pt = 0;
m_drag_num_ratlines = 0;
m_drag_ratline_start_pt = 0;
m_drag_ratline_end_pt = 0;
m_drag_ratline_width = 0;
m_cross_hairs = 0;
m_visual_grid_on = 0;
m_visual_grid_spacing = 0;
m_inflection_mode = IM_NONE;
}
// destructor
//
CDisplayList::~CDisplayList()
{
RemoveAll();
}
void CDisplayList::RemoveAllFromLayer( int layer )
{
// traverse list for layer, removing all elements
while( m_end[layer].prev != &m_start[layer] )
Remove( m_end[layer].prev );
}
void CDisplayList::RemoveAll()
{
// traverse lists for all layers, removing all elements
for( int layer=0; layer<MAX_LAYERS; layer++ )
{
RemoveAllFromLayer( layer );
}
if( m_drag_line_pt )
{
free( m_drag_line_pt );
m_drag_line_pt = 0;
}
if( m_drag_ratline_start_pt )
{
free( m_drag_ratline_start_pt );
m_drag_ratline_start_pt = 0;
}
if( m_drag_ratline_end_pt )
{
free( m_drag_ratline_end_pt );
m_drag_ratline_end_pt = 0;
}
}
// Set conversion parameters between world coords (used by elements in
// display list) and window coords (pixels)
//
// enter with:
// client_r = window client rectangle (pixels)
// screen_r = window client rectangle in screen coords (pixels)
// pane_org_x = starting x-coord of PCB drawing area in client rect (pixels)
// pane_org_y = starting y-coord of PCB drawing area in client rect (pixels)
// pane_bottom_h = height of bottom pane (pixels)
// pcb units per pixel = nm per pixel
// org_x = x-coord of left edge of drawing area (pcb units)
// org_y = y-coord of bottom edge of drawing area (pcb units)
//
// note that the actual scale factor is set by the arguments to
// SetWindowExt and SetViewportExt, and may be slightly different for x and y
//
void CDisplayList::SetMapping( CRect *client_r, CRect *screen_r, int pane_org_x, int pane_bottom_h,
double pcbu_per_pixel, int org_x, int org_y )
{
m_client_r = client_r; // pixels
m_screen_r = screen_r; // pixels
m_pane_org_x = pane_org_x; // pixels
m_bottom_pane_h = pane_bottom_h; // pixels
m_pane_org_y = client_r->bottom - pane_bottom_h; // pixels
m_scale = pcbu_per_pixel/m_pcbu_per_wu; // world units per pixel
m_org_x = org_x/m_pcbu_per_wu; // world units
m_org_y = org_y/m_pcbu_per_wu; // world units
//now set extents
double rw = m_client_r.Width(); // width of client area (pixels)
double rh = m_client_r.Height(); // height of client area (pixels)
double ext_x = rw*pcbu_per_pixel/m_pcbu_per_wu; // width in WU
double ext_y = rh*pcbu_per_pixel/m_pcbu_per_wu; // height in WU
int div = 1, mult = 1;
if( m_pcbu_per_wu >=25400 )
{
// this is necessary for Win95/98 (16-bit GDI)
int ext_max = max( ext_x, ext_y );
if( ext_max > 30000 )
div = ext_max/15000;
}
else
mult = m_pcbu_per_wu;
if( ext_x*mult/div > INT_MAX )
ASSERT(0);
if( ext_y*mult/div > INT_MAX )
ASSERT(0);
w_ext_x = ext_x*mult/div;
v_ext_x = rw*mult/div;
w_ext_y = ext_y*mult/div;
v_ext_y = -rh*mult/div;
m_wu_per_pixel_x = (double)w_ext_x/v_ext_x; // actual ratios
m_wu_per_pixel_y = (double)w_ext_y/v_ext_y;
m_pcbu_per_pixel_x = m_wu_per_pixel_x * m_pcbu_per_wu;
m_pcbu_per_pixel_y = m_wu_per_pixel_y * m_pcbu_per_wu;
m_max_x = m_org_x + m_wu_per_pixel_x*(client_r->right-pane_org_x) + 2; // world units
m_max_y = m_org_y - m_wu_per_pixel_y*client_r->bottom + 2; // world units
}
// add graphics element used for selection
//
dl_element * CDisplayList::AddSelector( id id, void * ptr, int layer, int gtype, int visible,
int w, int holew, int x, int y, int xf, int yf, int xo, int yo,
int radius )
{
dl_element * test = Add( id, ptr, LAY_SELECTION, gtype, visible,
w, holew, x, y, xf, yf, xo, yo, radius, layer );
test->layer = layer;
return test;
}
// Add entry to end of list, returns pointer to element created.
//
// Dimensional units for input parameters are PCBU
//
dl_element * CDisplayList::Add( id id, void * ptr, int layer, int gtype, int visible,
int w, int holew, int x, int y, int xf, int yf, int xo, int yo,
int radius, int orig_layer )
{
// create new element and link into list
dl_element * new_element = new dl_element;
new_element->prev = m_end[layer].prev;
new_element->next = &m_end[layer];
new_element->prev->next = new_element;
new_element->next->prev = new_element;
// now copy data from entry into element
new_element->magic = DL_MAGIC;
new_element->id = id;
new_element->ptr = ptr;
new_element->gtype = gtype;
new_element->visible = visible;
new_element->w = w/m_pcbu_per_wu;
new_element->holew = holew/m_pcbu_per_wu;
new_element->x = x/m_pcbu_per_wu;
new_element->xf = xf/m_pcbu_per_wu;
new_element->y = y/m_pcbu_per_wu;
new_element->yf = yf/m_pcbu_per_wu;
new_element->x_org = xo/m_pcbu_per_wu;
new_element->y_org = yo/m_pcbu_per_wu;
new_element->radius = radius/m_pcbu_per_wu;
new_element->sel_vert = 0;
new_element->layer = layer;
new_element->orig_layer = orig_layer;
new_element->dlist = this;
return new_element;
}
// set element parameters in PCBU
//
void CDisplayList::Set_gtype( dl_element * el, int gtype )
{
if( el)
el->gtype = gtype;
}
void CDisplayList::Set_visible( dl_element * el, int visible )
{
if( el)
el->visible = visible;
}
void CDisplayList::Set_sel_vert( dl_element * el, int sel_vert )
{
if( el)
el->sel_vert = sel_vert;
}
void CDisplayList::Set_w( dl_element * el, int w )
{
if( el)
el->w = w/m_pcbu_per_wu;
}
void CDisplayList::Set_holew( dl_element * el, int holew )
{
if( el)
el->holew = holew/m_pcbu_per_wu;
}
void CDisplayList::Set_x_org( dl_element * el, int x_org )
{
if( el)
el->x_org = x_org/m_pcbu_per_wu;
}
void CDisplayList::Set_y_org( dl_element * el, int y_org )
{
if( el)
el->y_org = y_org/m_pcbu_per_wu;
}
void CDisplayList::Set_x( dl_element * el, int x )
{
if( el)
el->x = x/m_pcbu_per_wu;
}
void CDisplayList::Set_y( dl_element * el, int y )
{
if( el)
el->y = y/m_pcbu_per_wu;
}
void CDisplayList::Set_xf( dl_element * el, int xf )
{
if( el)
el->xf = xf/m_pcbu_per_wu;
}
void CDisplayList::Set_yf( dl_element * el, int yf )
{
if( el)
el->yf = yf/m_pcbu_per_wu;
}
void CDisplayList::Set_layer( dl_element * el, int layer )
{
if( el)
el->layer = layer;
}
void CDisplayList::Set_radius( dl_element * el, int radius )
{
if( el)
el->radius = radius/m_pcbu_per_wu;
}
void CDisplayList::Set_id( dl_element * el, id * id )
{
if( el)
el->id = *id;
}
void CDisplayList::Move( dl_element * el, int dx, int dy )
{
el->x += dx;
el->y += dy;
el->x_org += dx;
el->y_org += dy;
el->xf += dx;
el->yf += dy;
}
// get element parameters in PCBU
//
void * CDisplayList::Get_ptr( dl_element * el ) { return el->ptr; }
int CDisplayList::Get_gtype( dl_element * el ) { return el->gtype; }
int CDisplayList::Get_visible( dl_element * el ) { return el->visible; }
int CDisplayList::Get_sel_vert( dl_element * el ) { return el->sel_vert; }
int CDisplayList::Get_w( dl_element * el ) { return el->w*m_pcbu_per_wu; }
int CDisplayList::Get_holew( dl_element * el ) { return el->holew*m_pcbu_per_wu; }
int CDisplayList::Get_x_org( dl_element * el ) { return el->x_org*m_pcbu_per_wu; }
int CDisplayList::Get_y_org( dl_element * el ) { return el->y_org*m_pcbu_per_wu; }
int CDisplayList::Get_x( dl_element * el ) { return el->x*m_pcbu_per_wu; }
int CDisplayList::Get_y( dl_element * el ) { return el->y*m_pcbu_per_wu; }
int CDisplayList::Get_xf( dl_element * el ) { return el->xf*m_pcbu_per_wu; }
int CDisplayList::Get_yf( dl_element * el ) { return el->yf*m_pcbu_per_wu; }
int CDisplayList::Get_radius( dl_element * el ) { return el->radius*m_pcbu_per_wu; }
int CDisplayList::Get_layer( dl_element * el ) { return el->layer; }
id CDisplayList::Get_id( dl_element * el ) { return el->id; }
void CDisplayList::Get_Endpoints(CPoint *cpi, CPoint *cpf)
{
cpi->x = m_drag_xi*m_pcbu_per_wu; cpi->y = m_drag_yi*m_pcbu_per_wu;
cpf->x = m_drag_xf*m_pcbu_per_wu; cpf->y = m_drag_yf*m_pcbu_per_wu;
}
// Remove element from list, return id
//
id CDisplayList::Remove( dl_element * element )
{
if( !element )
{
id no_id;
return no_id;
}
if( element->magic != DL_MAGIC )
{
ASSERT(0);
id no_id;
return no_id;
}
// remove links to this element
element->next->prev = element->prev;
element->prev->next = element->next;
// destroy element
id el_id = element->id;
delete( element );
return el_id;
}
// Draw the display list using device DC or memory DC
//
void CDisplayList::Draw( CDC * dDC, bool print )
{
CDC * pDC;
if( memDC && !print )
pDC = memDC;
else
pDC = dDC;
if (!print)
{
pDC->SetBkColor( RGB(0, 0, 0) );
}
// create pens and brushes
CPen * old_pen;
CPen black_pen( PS_SOLID, 1, RGB( 0, 0, 0 ) );
CPen white_pen( PS_SOLID, 1, RGB( 255, 255, 255 ) );
CPen grid_pen( PS_SOLID, 1,
RGB( m_rgb[LAY_VISIBLE_GRID][0],
m_rgb[LAY_VISIBLE_GRID][1],
m_rgb[LAY_VISIBLE_GRID][2] ) );
CPen backgnd_pen( PS_SOLID, 1,
RGB( m_rgb[LAY_BACKGND][0],
m_rgb[LAY_BACKGND][1],
m_rgb[LAY_BACKGND][2] ) );
CPen board_pen( PS_SOLID, 1,
RGB( m_rgb[LAY_BOARD_OUTLINE][0],
m_rgb[LAY_BOARD_OUTLINE][1],
m_rgb[LAY_BOARD_OUTLINE][2] ) );
CBrush * old_brush;
CBrush black_brush( RGB( 0, 0, 0 ) );
CBrush backgnd_brush( RGB( m_rgb[LAY_BACKGND][0],
m_rgb[LAY_BACKGND][1],
m_rgb[LAY_BACKGND][2] ) );
// paint it background color
old_brush = pDC->SelectObject( &backgnd_brush );
old_pen = pDC->SelectObject( &black_pen );
CRect client_rect;
client_rect.left = m_org_x;
client_rect.right = m_max_x;
client_rect.bottom = m_org_y;
client_rect.top = m_max_y;
pDC->Rectangle( &client_rect );
DrawVisualGrid(pDC);
DrawList(pDC, m_scale, client_rect);
// origin
if(!print)
{
CRect r;
r.top = 25 * NM_PER_MIL / m_pcbu_per_wu;
r.left = -25 * NM_PER_MIL / m_pcbu_per_wu;
r.right = 25 * NM_PER_MIL / m_pcbu_per_wu;
r.bottom = -25 * NM_PER_MIL / m_pcbu_per_wu;
pDC->SelectObject(&grid_pen);
pDC->SelectObject(GetStockObject(HOLLOW_BRUSH));
pDC->MoveTo(-100 * NM_PER_MIL / m_pcbu_per_wu, 0);
pDC->LineTo(-25 * NM_PER_MIL / m_pcbu_per_wu, 0);
pDC->MoveTo(100 * NM_PER_MIL / m_pcbu_per_wu, 0);
pDC->LineTo(25 * NM_PER_MIL / m_pcbu_per_wu, 0);
pDC->MoveTo(0, -100 * NM_PER_MIL / m_pcbu_per_wu);
pDC->LineTo(0, -25 * NM_PER_MIL / m_pcbu_per_wu);
pDC->MoveTo(0, 100 * NM_PER_MIL / m_pcbu_per_wu);
pDC->LineTo(0, 25 * NM_PER_MIL / m_pcbu_per_wu);
pDC->Ellipse(r);
pDC->SelectObject(old_pen);
pDC->SelectObject(old_brush);
}
// if dragging, draw drag lines or shape
int old_ROP2 = pDC->GetROP2();
pDC->SetROP2( R2_XORPEN );
if( m_drag_num_lines )
{
// draw line array
CPen drag_pen( PS_SOLID, 1, RGB( m_rgb[m_drag_layer][0],
m_rgb[m_drag_layer][1], m_rgb[m_drag_layer][2] ) );
CPen * old_pen = pDC->SelectObject( &drag_pen );
for( int il=0; il<m_drag_num_lines; il++ )
{
pDC->MoveTo( m_drag_x+m_drag_line_pt[2*il].x, m_drag_y+m_drag_line_pt[2*il].y );
pDC->LineTo( m_drag_x+m_drag_line_pt[2*il+1].x, m_drag_y+m_drag_line_pt[2*il+1].y );
}
pDC->SelectObject( old_pen );
}
if( m_drag_num_ratlines )
{
// draw ratline array
CPen drag_pen( PS_SOLID, m_drag_ratline_width, RGB( m_rgb[m_drag_layer][0],
m_rgb[m_drag_layer][1], m_rgb[m_drag_layer][2] ) );
CPen * old_pen = pDC->SelectObject( &drag_pen );
for( int il=0; il<m_drag_num_ratlines; il++ )
{
pDC->MoveTo( m_drag_ratline_start_pt[il].x, m_drag_ratline_start_pt[il].y );
pDC->LineTo( m_drag_x+m_drag_ratline_end_pt[il].x, m_drag_y+m_drag_ratline_end_pt[il].y );
}
pDC->SelectObject( old_pen );
}
if( m_drag_flag )
{
// 4. Redraw the three segments:
if(m_drag_shape == DS_SEGMENT)
{
pDC->MoveTo( m_drag_xb, m_drag_yb );
// draw first segment
CPen pen0( PS_SOLID, m_drag_w0, RGB( m_rgb[m_drag_layer_0][0],
m_rgb[m_drag_layer_0][1], m_rgb[m_drag_layer_0][2] ) );
CPen * old_pen = pDC->SelectObject( &pen0 );
pDC->LineTo( m_drag_xi, m_drag_yi );
// draw second segment
CPen pen1( PS_SOLID, m_drag_w1, RGB( m_rgb[m_drag_layer_1][0],
m_rgb[m_drag_layer_1][1], m_rgb[m_drag_layer_1][2] ) );
pDC->SelectObject( &pen1 );
pDC->LineTo( m_drag_xf, m_drag_yf );
// draw third segment
if(m_drag_style2 != DSS_NONE)
{
CPen pen2( PS_SOLID, m_drag_w2, RGB( m_rgb[m_drag_layer_2][0],
m_rgb[m_drag_layer_2][1], m_rgb[m_drag_layer_2][2] ) );
pDC->SelectObject( &pen2 );
pDC->LineTo( m_drag_xe, m_drag_ye );
}
pDC->SelectObject( old_pen );
}
// draw drag shape, if used
if( m_drag_shape == DS_LINE_VERTEX || m_drag_shape == DS_LINE )
{
CPen pen_w( PS_SOLID, m_drag_w1, RGB( m_rgb[m_drag_layer_1][0],
m_rgb[m_drag_layer_1][1], m_rgb[m_drag_layer_1][2] ) );
// draw dragged shape
pDC->SelectObject( &pen_w );
if( m_drag_style1 == DSS_STRAIGHT )
{
if( m_inflection_mode == IM_NONE )
{
pDC->MoveTo( m_drag_xi, m_drag_yi );
pDC->LineTo( m_drag_x, m_drag_y );
}
else
{
CPoint pi( m_drag_xi, m_drag_yi );
CPoint pf( m_drag_x, m_drag_y );
CPoint p = GetInflectionPoint( pi, pf, m_inflection_mode );
pDC->MoveTo( m_drag_xi, m_drag_yi );
if( p != pi )
pDC->LineTo( p.x, p.y );
pDC->LineTo( m_drag_x, m_drag_y );
}
m_last_inflection_mode = m_inflection_mode;
}
else if( m_drag_style1 == DSS_ARC_CW )
DrawArc( pDC, DL_ARC_CW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else if( m_drag_style1 == DSS_ARC_CCW )
DrawArc( pDC, DL_ARC_CCW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else if( m_drag_style1 == DSS_CURVE_CW )
DrawCurve( pDC, DL_CURVE_CW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else if( m_drag_style1 == DSS_CURVE_CCW )
DrawCurve( pDC, DL_CURVE_CCW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else
ASSERT(0);
if( m_drag_shape == DS_LINE_VERTEX )
{
CPen pen( PS_SOLID, m_drag_w2, RGB( m_rgb[m_drag_layer_2][0],
m_rgb[m_drag_layer_2][1], m_rgb[m_drag_layer_2][2] ) );
pDC->SelectObject( &pen );
if( m_drag_style2 == DSS_STRAIGHT )
pDC->LineTo( m_drag_xf, m_drag_yf );
else if( m_drag_style2 == DSS_ARC_CW )
DrawArc( pDC, DL_ARC_CW, m_drag_x, m_drag_y, m_drag_xf, m_drag_yf );
else if( m_drag_style2 == DSS_ARC_CCW )
DrawArc( pDC, DL_ARC_CCW, m_drag_x, m_drag_y, m_drag_xf, m_drag_yf );
else if( m_drag_style2 == DSS_CURVE_CW )
DrawCurve( pDC, DL_CURVE_CW, m_drag_x, m_drag_y, m_drag_xf, m_drag_yf );
else if( m_drag_style2 == DSS_CURVE_CCW )
DrawCurve( pDC, DL_CURVE_CCW, m_drag_x, m_drag_y, m_drag_xf, m_drag_yf );
else
ASSERT(0);
pDC->SelectObject( old_pen );
}
pDC->SelectObject( old_pen );
// see if leading via needs to be drawn
if( m_drag_via_drawn )
{
// draw or undraw via
int thick = (m_drag_via_w - m_drag_via_holew)/2;
int w = m_drag_via_w - thick;
int holew = m_drag_via_holew;
// CPen pen( PS_SOLID, thick, RGB( m_rgb[LAY_PAD_THRU][0], m_rgb[LAY_PAD_THRU][1], m_rgb[LAY_PAD_THRU][2] ) );
CPen pen( PS_SOLID, thick, RGB( m_rgb[m_drag_layer_1][0], m_rgb[m_drag_layer_1][1], m_rgb[m_drag_layer_1][2] ) );
CPen * old_pen = pDC->SelectObject( &pen );
CBrush black_brush( RGB( 0, 0, 0 ) );
CBrush * old_brush = pDC->SelectObject( &black_brush );
pDC->Ellipse( m_drag_xi - w/2, m_drag_yi - w/2, m_drag_xi + w/2, m_drag_yi + w/2 );
pDC->SelectObject( old_brush );
pDC->SelectObject( old_pen );
}
}
else if( m_drag_shape == DS_ARC_STRAIGHT
|| m_drag_shape == DS_ARC_CW || m_drag_shape == DS_ARC_CCW
|| m_drag_shape == DS_CURVE_CW || m_drag_shape == DS_CURVE_CCW
)
{
CPen pen_w( PS_SOLID, m_drag_w1, RGB( m_rgb[m_drag_layer_1][0],
m_rgb[m_drag_layer_1][1], m_rgb[m_drag_layer_1][2] ) );
// redraw dragged shape
pDC->SelectObject( &pen_w );
if( m_drag_shape == DS_ARC_STRAIGHT )
DrawArc( pDC, DL_LINE, m_drag_x, m_drag_y, m_drag_xi, m_drag_yi );
else if( m_drag_shape == DS_ARC_CW )
DrawArc( pDC, DL_ARC_CW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else if( m_drag_shape == DS_ARC_CCW )
DrawArc( pDC, DL_ARC_CCW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else if( m_drag_shape == DS_CURVE_CW )
DrawCurve( pDC, DL_CURVE_CW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
else if( m_drag_shape == DS_CURVE_CCW )
DrawCurve( pDC, DL_CURVE_CCW, m_drag_xi, m_drag_yi, m_drag_x, m_drag_y );
pDC->SelectObject( old_pen );
m_last_drag_shape = m_drag_shape;
}
}
// if cross hairs, draw them
if( m_cross_hairs )
{
// draw cross-hairs
COLORREF bk = pDC->SetBkColor( RGB(0,0,0) );
CPen pen( PS_DOT, 0, RGB( 128, 128, 128 ) );
pDC->SelectObject( &pen );
int x = m_cross_bottom.x;
int y = m_cross_left.y;
m_cross_left.x = m_org_x;
m_cross_right.x = m_max_x;
m_cross_bottom.y = m_org_y;
m_cross_top.y = m_max_y;
if( x-m_org_x > y-m_org_y )
{
// bottom-left cursor line intersects m_org_y
m_cross_botleft.x = x - (y - m_org_y);
m_cross_botleft.y = m_org_y;
}
else
{
// bottom-left cursor line intersects m_org_x
m_cross_botleft.x = m_org_x;
m_cross_botleft.y = y - (x - m_org_x);
}
if( m_max_x-x > y-m_org_y )
{
// bottom-right cursor line intersects m_org_y
m_cross_botright.x = x + (y - m_org_y);
m_cross_botright.y = m_org_y;
}
else
{
// bottom-right cursor line intersects m_max_x
m_cross_botright.x = m_max_x;
m_cross_botright.y = y - (m_max_x - x);
}
if( x-m_org_x > m_max_y-y )
{
// top-left cursor line intersects m_max_y
m_cross_topleft.x = x - (m_max_y - y);
m_cross_topleft.y = m_max_y;
}
else
{
// top-left cursor line intersects m_org_x
m_cross_topleft.x = m_org_x;
m_cross_topleft.y = y + (x - m_org_x);
}
if( m_max_x-x > m_max_y-y )
{
// top-right cursor line intersects m_max_y
m_cross_topright.x = x + (m_max_y - y);
m_cross_topright.y = m_max_y;
}
else
{
// top-right cursor line intersects m_max_x
m_cross_topright.x = m_max_x;
m_cross_topright.y = y + (m_max_x - x);
}
pDC->MoveTo( m_cross_left );
pDC->LineTo( m_cross_right );
pDC->MoveTo( m_cross_bottom );
pDC->LineTo( m_cross_top );
if( m_cross_hairs == 2 )
{
pDC->MoveTo( m_cross_topleft );
pDC->LineTo( m_cross_botright );
pDC->MoveTo( m_cross_botleft );
pDC->LineTo( m_cross_topright );
}
pDC->SelectObject( old_pen );
pDC->SetBkColor( bk );
}
pDC->SetROP2( old_ROP2 );
//DrawDebug(pDC);
// restore original objects
pDC->SelectObject( old_pen );
pDC->SelectObject( old_brush );
// double-buffer to screen
if( memDC )
{
dDC->BitBlt( m_org_x, m_org_y, m_max_x-m_org_x, m_max_y-m_org_y,
pDC, m_org_x, m_org_y, SRCCOPY );
}
}
/**
Just draw the basics (no cursors et al.)
We use this for printing as well as the main windows frame.
*/
void CDisplayList::DrawList(CDC *pDC, double scale, CRect &clip, CArray<void*> *selected)
{
CPen black_pen(PS_SOLID, 1, RGB(0, 0, 0));
CPen backgnd_pen(PS_SOLID, 1,
RGB(m_rgb[LAY_BACKGND][0],
m_rgb[LAY_BACKGND][1],
m_rgb[LAY_BACKGND][2]));
CBrush backgnd_brush(RGB(m_rgb[LAY_BACKGND][0],
m_rgb[LAY_BACKGND][1],
m_rgb[LAY_BACKGND][2]));
CBrush black_brush(RGB(0, 0, 0));
// now traverse the lists, starting with the layer in the last element
// of the m_order[] array
int nlines = 0;
int size_of_2_pixels = 2 * scale;
for(int order = (MAX_LAYERS - 1); order >= 0; order--)
{
int layer = m_layer_in_order[order];
if(!m_vis[layer] || layer == LAY_SELECTION)
continue;
CPen line_pen(PS_SOLID, 1, RGB(m_rgb[layer][0], m_rgb[layer][1], m_rgb[layer][2]));
CBrush fill_brush(RGB(m_rgb[layer][0], m_rgb[layer][1], m_rgb[layer][2]));
pDC->SelectObject(&line_pen);
pDC->SelectObject(&fill_brush);
dl_element * el = &m_start[layer];
while(el->next->next)
{
el = el->next;
if(selected != 0)
{
// Check to see if element is in the selected list
bool found = false;
for(int i = 0; i < selected->GetSize(); ++i)
{
void* selectedItem = (*selected)[i];
if(el->ptr == selectedItem)
{
found = true;
}
}
if(!found)
{
continue;
}
}
if(el->visible && m_vis[el->orig_layer])
{
int xi = el->x;
int xf = el->xf;
int yi = el->y;
int yf = el->yf;
int w = el->w;
if(el->gtype == DL_CIRC || el->gtype == DL_HOLLOW_CIRC)
{
if(xi - w / 2 < clip.right && xi + w / 2 > clip.left
&& yi - w / 2 < clip.top && yi + w / 2 > clip.bottom)
{
if(el->gtype == DL_HOLLOW_CIRC)
pDC->SelectObject(GetStockObject(HOLLOW_BRUSH));
pDC->Ellipse(xi - w / 2, yi - w / 2, xi + w / 2, yi + w / 2);
if(el->gtype == DL_HOLLOW_CIRC)
pDC->SelectObject(fill_brush);
}
}
if(el->gtype == DL_HOLE)
{
if(xi - w / 2 < clip.right && xi + w / 2 > clip.left
&& yi - w / 2 < clip.top && yi + w / 2 > clip.bottom)
{
if(w>size_of_2_pixels)
pDC->Ellipse(xi - w / 2, yi - w / 2, xi + w / 2, yi + w / 2);
}
}
else if(el->gtype == DL_CENTROID)
{
// x,y are center coords; w = width;
// xf,yf define arrow end-point for P&P orientation
if(xi - w / 2 < clip.right && xi + w / 2 > clip.left
&& yi - w / 2 < clip.top && yi + w / 2 > clip.bottom)
{
pDC->SelectObject(GetStockObject(HOLLOW_BRUSH));
pDC->Ellipse(xi - w / 4, yi - w / 4, xi + w / 4, yi + w / 4);
pDC->SelectObject(fill_brush);
xi = el->x - el->w / 2;
xf = el->x + el->w / 2;
yi = el->y - el->w / 2;
yf = el->y + el->w / 2;
pDC->MoveTo(xi, yi);
pDC->LineTo(xf, yf);
pDC->MoveTo(xf, yi);
pDC->LineTo(xi, yf);
pDC->MoveTo(el->x, el->y); // p&p arrow
pDC->LineTo(el->xf, el->yf); //
if(el->y == el->yf)
{
// horizontal arrow
pDC->LineTo(el->xf - (el->xf - el->x) / 4,
el->yf + w / 4);
pDC->LineTo(el->xf - (el->xf - el->x) / 4,
el->yf - w / 4);
pDC->LineTo(el->xf, el->yf);
}
else if(el->x == el->xf)
{
// vertical arrow
pDC->LineTo(el->xf + w / 4, el->yf - (el->yf - el->y) / 4);
pDC->LineTo(el->xf - w / 4, el->yf - (el->yf - el->y) / 4);
pDC->LineTo(el->xf, el->yf);
}
else
ASSERT(0);
int w_pp = el->w / 10;
nlines += 2;
}
}
else if(el->gtype == DL_DONUT)
{
if(xi - w / 2 < clip.right && xi + w / 2 > clip.left
&& yi - w / 2 < clip.top && yi + w / 2 > clip.bottom)
{
int thick = (w - el->holew) / 2;
int ww = w - thick;
int holew = el->holew;
int size_of_2_pixels = scale;
if(thick < size_of_2_pixels)
{
holew = w - 2 * size_of_2_pixels;
if(holew < 0)
holew = 0;
thick = (w - holew) / 2;
ww = w - thick;
}
if(w - el->holew > 0)
{
CPen pen(PS_SOLID, thick, RGB(m_rgb[layer][0], m_rgb[layer][1], m_rgb[layer][2]));
pDC->SelectObject(&pen);
pDC->SelectObject(&backgnd_brush);
pDC->Ellipse(xi - ww / 2, yi - ww / 2, xi + ww / 2, yi + ww / 2);
pDC->SelectObject(line_pen);
pDC->SelectObject(fill_brush);
}
else
{
CPen backgnd_pen(PS_SOLID, 1,
RGB(m_rgb[LAY_BACKGND][0],
m_rgb[LAY_BACKGND][1],
m_rgb[LAY_BACKGND][2]));
pDC->SelectObject(&backgnd_pen);
pDC->SelectObject(&backgnd_brush);
pDC->Ellipse(xi - holew / 2, yi - holew / 2, xi + holew / 2, yi + holew / 2);
pDC->SelectObject(line_pen);
pDC->SelectObject(fill_brush);
}
}
}
else if(el->gtype == DL_SQUARE)
{
if(xi - w / 2 < clip.right && xi + w / 2 > clip.left
&& yi - w / 2 < clip.top && yi + w / 2 > clip.bottom)
{
int holew = el->holew;
pDC->Rectangle(xi - w / 2, yi - w / 2, xi + w / 2, yi + w / 2);
if(holew)
{
pDC->SelectObject(&backgnd_brush);
pDC->SelectObject(&backgnd_pen);
pDC->Ellipse(xi - holew / 2, yi - holew / 2,
xi + holew / 2, yi + holew / 2);
pDC->SelectObject(fill_brush);
pDC->SelectObject(line_pen);
}
}
}
else if(el->gtype == DL_OCTAGON || el->gtype == DL_HOLLOW_OCTAGON)
{
if(xi - w / 2 < clip.right && xi + w / 2 > clip.left
&& yi - w / 2 < clip.top && yi + w / 2 > clip.bottom)
{
const double pi = 3.14159265359;
POINT pt[8];
double angle = pi / 8.0;
for(int iv = 0; iv<8; iv++)
{
pt[iv].x = el->x + 0.5 * el->w * cos(angle);
pt[iv].y = el->y + 0.5 * el->w * sin(angle);
angle += pi / 4.0;
}
int holew = el->holew;
if(el->gtype == DL_HOLLOW_OCTAGON)
pDC->SelectObject(GetStockObject(HOLLOW_BRUSH));
pDC->Polygon(pt, 8);
if(el->gtype == DL_HOLLOW_OCTAGON)
pDC->SelectObject(fill_brush);
if(holew)
{
pDC->SelectObject(&backgnd_brush);
pDC->SelectObject(&backgnd_pen);
pDC->Ellipse(xi - holew / 2, yi - holew / 2,
xi + holew / 2, yi + holew / 2);
pDC->SelectObject(fill_brush);
pDC->SelectObject(line_pen);
}
}
}
else if(el->gtype == DL_RECT)
{
if(xf < xi)
{
xf = xi;
xi = el->xf;
}
if(yf < yi)
{
yf = yi;
yi = el->yf;
}
if(xi < clip.right && xf > clip.left && yi < clip.top && yf > clip.bottom)
{
int holew = el->holew;
pDC->Rectangle(xi, yi, xf, yf);
if(holew)
{
pDC->SelectObject(&black_brush);
pDC->SelectObject(&black_pen);
pDC->Ellipse(el->x_org - holew / 2, el->y_org - holew / 2,
el->x_org + holew / 2, el->y_org + holew / 2);
pDC->SelectObject(fill_brush);
pDC->SelectObject(line_pen);
}
}
}
else if(el->gtype == DL_HOLLOW_RECT)
{
if(xf < xi)
{
xf = xi;
xi = el->xf;
}
if(yf < yi)
{
yf = yi;
yi = el->yf;
}
if(xi < clip.right && xf > clip.left
&& yi < clip.top && yf > clip.bottom)
{
pDC->MoveTo(xi, yi);
pDC->LineTo(xf, yi);
pDC->LineTo(xf, yf);
pDC->LineTo(xi, yf);
pDC->LineTo(xi, yi);
nlines += 4;
}
}
else if(el->gtype == DL_OVAL || el->gtype == DL_HOLLOW_OVAL)
{
if(xf < xi)
{
xf = xi;
xi = el->xf;
}
if(yf < yi)
{
yf = yi;
yi = el->yf;
}
if(xi < clip.right && xf > clip.left && yi < clip.top && yf > clip.bottom)
{
int h = abs(xf - xi);
int v = abs(yf - yi);
int r = min(h, v);
if(el->gtype == DL_HOLLOW_OVAL)
pDC->SelectObject(GetStockObject(HOLLOW_BRUSH));
pDC->RoundRect(xi, yi, xf, yf, r, r);
if(el->gtype == DL_HOLLOW_OVAL)
pDC->SelectObject(fill_brush);
int holew = el->holew;
if(el->holew)
{
pDC->SelectObject(&black_brush);
pDC->SelectObject(&black_pen);
pDC->Ellipse(el->x_org - holew / 2, el->y_org - holew / 2,
el->x_org + holew / 2, el->y_org + holew / 2);
pDC->SelectObject(fill_brush);
pDC->SelectObject(line_pen);
}
}
}
else if(el->gtype == DL_RRECT || el->gtype == DL_HOLLOW_RRECT)
{
if(xf < xi)
{
xf = xi;
xi = el->xf;
}
if(yf < yi)
{
yf = yi;
yi = el->yf;
}
if(xi < clip.right && xf > clip.left && yi < clip.top && yf > clip.bottom)
{
int holew = el->holew;
if(el->gtype == DL_HOLLOW_RRECT)
pDC->SelectObject(GetStockObject(HOLLOW_BRUSH));
pDC->RoundRect(xi, yi, xf, yf, 2 * el->radius, 2 * el->radius);
if(el->gtype == DL_HOLLOW_RRECT)
pDC->SelectObject(fill_brush);
if(holew)
{
pDC->SelectObject(&black_brush);
pDC->SelectObject(&black_pen);
pDC->Ellipse(el->x_org - holew / 2, el->y_org - holew / 2,
el->x_org + holew / 2, el->y_org + holew / 2);
pDC->SelectObject(fill_brush);
pDC->SelectObject(line_pen);
}
}
}
else if(el->gtype == DL_RECT_X)
{
if(xf < xi)
{
xf = xi;
xi = el->xf;
}
if(yf < yi)