void CurveCtx::nav_zoom()
{
if ( nodraw)
return;
if ( a.size() > 0)
{
double x_nav_left, x_nav_right, y_nav_low, y_nav_high;
get_borders();
// cout << "Borders : <" << x_left << " > " << x_right << " ^ " <<
// y_high << " Y " << y_low << endl;
x_nav_left = x_left;
x_nav_right = x_right;
y_nav_low = y_low;
y_nav_high = y_high;
if ( x_nav_right - x_nav_left == 0 || y_nav_high - y_nav_low == 0)
return;
navw.zoom_factor_x = navw.window_width / (x_nav_right - x_nav_left);
navw.zoom_factor_y = navw.window_height / (y_nav_high - y_nav_low);
navw.offset_x = int( x_nav_left * navw.zoom_factor_x);
navw.offset_y = int( y_nav_low * navw.zoom_factor_y);
a.nav_zoom();
clear( &navw);
nav_draw( &navw, 0, 0, navw.window_width, navw.window_height);
}
}
void FlowText::move(
void* pos, double x, double y, int highlight, int dimmed, int hot)
{
erase(pos, hot, NULL);
nav_erase(pos, NULL);
p.x = x;
p.y = y;
zoom();
nav_zoom();
draw(pos, highlight, dimmed, hot, NULL);
nav_draw(pos, highlight, NULL);
}
void FlowPixmap::move( void *pos, double x, double y, int highlight, int hot)
{
erase( pos, hot, NULL);
nav_erase( pos, NULL);
p.x = x;
p.y = y;
zoom();
nav_zoom();
draw( pos, highlight, hot, NULL);
nav_draw( pos, highlight, NULL);
}
void FlowPixmap::shift( void *pos, double delta_x, double delta_y,
int highlight, int hot)
{
erase( pos, hot, NULL);
nav_erase( pos, NULL);
p.x += delta_x;
p.y += delta_y;
zoom();
nav_zoom();
draw( pos, highlight, hot, NULL);
nav_draw( pos, highlight, NULL);
}
void FlowLine::move( void *pos, double x1, double y1, double x2, double y2,
int highlight, int hot)
{
erase( pos, hot, NULL);
nav_erase( pos, NULL);
p1.x = x1;
p1.y = y1;
p2.x = x2;
p2.y = y2;
zoom();
nav_zoom();
draw( pos, highlight, hot, NULL);
nav_draw( pos, highlight, NULL);
}
void FlowImage::shift( void *pos, double delta_x, double delta_y,
int highlight, int hot)
{
erase( pos, hot, NULL);
nav_erase( pos, NULL);
ll.x += delta_x;
ll.y += delta_y;
ur.x += delta_x;
ur.y += delta_y;
zoom();
nav_zoom();
draw( pos, highlight, hot, NULL);
nav_draw( pos, highlight, NULL);
}
void FlowArc::move( void *pos, double x1, double y1, double x2, double y2,
int ang1, int ang2, int highlight, int hot)
{
erase( pos, hot, NULL);
nav_erase( pos, NULL);
ll.x = x1;
ll.y = y1;
ur.x = x2;
ur.y = y2;
angle1 = ang1;
angle2 = ang2;
zoom();
nav_zoom();
draw( pos, highlight, hot, NULL);
nav_draw( pos, highlight, NULL);
}
void FlowImage::move( void *pos, double x, double y, int highlight, int hot)
{
double width, height;
width = ur.x - ll.x;
height = ur.y - ll.y;
erase( pos, hot, NULL);
nav_erase( pos, NULL);
ll.x = x;
ll.y = y;
ur.x = x + width;
ur.y = y + height;
zoom();
nav_zoom();
draw( pos, highlight, hot, NULL);
nav_draw( pos, highlight, NULL);
}
void FlowArrow::shift(void* pos, double delta_x, double delta_y, int highlight,
int dimmed, int hot)
{
erase(pos, hot, NULL);
nav_erase(pos, NULL);
p_dest.x += delta_x;
p_dest.y += delta_y;
p1.x += delta_x;
p1.y += delta_y;
p2.x += delta_x;
p2.y += delta_y;
zoom();
nav_zoom();
draw(pos, highlight, dimmed, hot, NULL);
nav_draw(pos, highlight, NULL);
}
void FlowArrow::move(void* pos, double x1, double y1, double x2, double y2,
int highlight, int dimmed, int hot)
{
erase(pos, hot, NULL);
nav_erase(pos, NULL);
if (fabs(x2 - x1) < DBL_EPSILON) {
if (y1 > y2) {
p1.x = x2 + arrow_width / 2;
p1.y = y2 + arrow_length;
p2.x = x2 - arrow_width / 2;
p2.y = y2 + arrow_length;
} else {
p1.x = x2 + arrow_width / 2;
p1.y = y2 - arrow_length;
p2.x = x2 - arrow_width / 2;
p2.y = y2 - arrow_length;
}
} else if (fabs(y2 - y1) < DBL_EPSILON) {
if (x1 > x2) {
p1.x = x2 + arrow_length;
p1.y = y2 + arrow_width / 2;
p2.x = x2 + arrow_length;
p2.y = y2 - arrow_width / 2;
} else {
p1.x = x2 - arrow_length;
p1.y = y2 - arrow_width / 2;
p2.x = x2 - arrow_length;
p2.y = y2 + arrow_width / 2;
}
} else {
double d = sqrt((y1 - y2) * (y1 - y2) + (x1 - x2) * (x1 - x2));
p1.x = x2 + (x1 - x2) * arrow_length / d + (y1 - y2) * arrow_width / d / 2;
p1.y = y2 + (y1 - y2) * arrow_length / d - (x1 - x2) * arrow_width / d / 2;
p2.x = x2 + (x1 - x2) * arrow_length / d - (y1 - y2) * arrow_width / d / 2;
p2.y = y2 + (y1 - y2) * arrow_length / d + (x1 - x2) * arrow_width / d / 2;
}
p_dest.x = x2;
p_dest.y = y2;
zoom();
nav_zoom();
draw(pos, highlight, dimmed, hot, NULL);
nav_draw(pos, highlight, NULL);
}
int CurveCtx::event_handler_nav( glow_eEvent event, int x, int y)
{
GlowCtx *ctx;
ctx = this;
switch ( event) {
case glow_eEvent_MB1Press:
if ( nav_rect_ll_x < x && x < nav_rect_ur_x &&
nav_rect_ll_y < y && y < nav_rect_ur_y)
{
nav_rect_movement_active = 1;
nav_rect_move_last_x = x;
nav_rect_move_last_y = y;
}
break;
case glow_eEvent_MB2Press:
if ( nav_rect_ll_x < x && x < nav_rect_ur_x &&
nav_rect_ll_y < y && y < nav_rect_ur_y)
{
nav_rect_zoom_active = 1;
nav_rect_move_last_x = x;
nav_rect_move_last_y = y;
}
break;
case glow_eEvent_CursorMotion:
if ( nav_rect_ll_x < x && x < nav_rect_ur_x &&
nav_rect_ll_y < y && y < nav_rect_ur_y)
{
if ( !nav_rect_hot)
{
gdraw->set_cursor( &navw, glow_eDrawCursor_CrossHair);
nav_rect_hot = 1;
}
}
else
{
if ( nav_rect_hot)
{
gdraw->set_cursor( &navw, glow_eDrawCursor_Normal);
nav_rect_hot = 0;
}
}
break;
case glow_eEvent_Exposure:
gdraw->get_window_size( &navw, &navw.window_width, &navw.window_height);
nav_zoom();
break;
case glow_eEvent_ButtonMotion:
if ( nav_rect_movement_active)
{
int delta_x, delta_y, mainwind_delta_x, mainwind_delta_y;
gdraw->rect_erase( &navw, nav_rect_ll_x, nav_rect_ll_y,
nav_rect_ur_x - nav_rect_ll_x, nav_rect_ur_y - nav_rect_ll_y, 0);
delta_x = x - nav_rect_move_last_x;
delta_y = 0;
nav_rect_ll_x += delta_x;
nav_rect_ur_x += delta_x;
nav_rect_ll_y += delta_y;
nav_rect_ur_y += delta_y;
nav_rect_move_last_x = x;
nav_rect_move_last_y = y;
nav_draw( &navw, nav_rect_ll_x - 10, nav_rect_ll_y - 10,
nav_rect_ur_x + 10, nav_rect_ur_y + 10);
// glow_draw_nav_rect( this, nav_rect_ll_x, nav_rect_ll_y,
// nav_rect_ur_x - nav_rect_ll_x, nav_rect_ur_y - nav_rect_ll_y,
// glow_eDrawType_Line, 0, 0);
mainwind_delta_x = int( - mw.zoom_factor_x / navw.zoom_factor_x * delta_x);
mainwind_delta_y = int( - mw.zoom_factor_y / navw.zoom_factor_y * delta_y);
mw.offset_x -= mainwind_delta_x;
mw.offset_y -= mainwind_delta_y;
a.traverse( mainwind_delta_x, mainwind_delta_y);
if ( ctx_type == glow_eCtxType_Grow) {
((GrowCtx *)this)->polyline_last_end_x += mainwind_delta_x;
((GrowCtx *)this)->polyline_last_end_y += mainwind_delta_y;
}
gdraw->copy_area( &mw, mainwind_delta_x, mainwind_delta_y);
// clear();
if ( !unobscured)
draw( &mw, 0, 0, mw.window_width, mw.window_height);
else {
if ( mainwind_delta_x >= 0 && mainwind_delta_y >= 0) {
if ( mainwind_delta_x)
draw( &mw, 0, 0, mainwind_delta_x, mw.window_height);
if ( mainwind_delta_y)
draw( &mw, mainwind_delta_x, 0, mw.window_width, mainwind_delta_y);
}
else if ( mainwind_delta_x <= 0 && mainwind_delta_y <= 0) {
if ( mainwind_delta_x)
draw( &mw, mw.window_width+mainwind_delta_x, 0, mw.window_width, mw.window_height);
if ( mainwind_delta_y)
draw( &mw, 0, mw.window_height + mainwind_delta_y,
mw.window_width + mainwind_delta_x, mw.window_height);
}
else if ( mainwind_delta_x <= 0 && mainwind_delta_y >= 0) {
if ( mainwind_delta_x)
draw( &mw, mw.window_width + mainwind_delta_x, 0, mw.window_width,
mw.window_height);
if ( mainwind_delta_y)
draw( &mw, 0, 0, mw.window_width + mainwind_delta_x, mainwind_delta_y);
}
else
{
if ( mainwind_delta_x)
draw( &mw, 0, 0, mainwind_delta_x, mw.window_height);
if ( mainwind_delta_y)
draw( &mw, mainwind_delta_x, mw.window_height+ mainwind_delta_y,
mw.window_width, mw.window_height);
}
}
change_scrollbar();
}
else if ( nav_rect_zoom_active) {
int delta_x, delta_y;
double zoom_f;
double center_x, center_y;
double center_dist, center_dist_last;
gdraw->rect_erase( &navw, nav_rect_ll_x, nav_rect_ll_y,
nav_rect_ur_x - nav_rect_ll_x, nav_rect_ur_y - nav_rect_ll_y, 0);
delta_x = x - nav_rect_move_last_x;
delta_y = 0;
center_x = 0.5 * (nav_rect_ur_x + nav_rect_ll_x);
center_y = 0.5 * (nav_rect_ur_y + nav_rect_ll_y);
center_dist_last = sqrt( (nav_rect_move_last_x - center_x) *
(nav_rect_move_last_x - center_x) +
(nav_rect_move_last_y - center_y) *
(nav_rect_move_last_y - center_y));
center_dist = sqrt((x - center_x)*(x - center_x) +
(y - center_y)*(y - center_y));
if ( center_dist < DBL_EPSILON)
return 1;
zoom_f = center_dist_last / center_dist;
// if ( fabs(zoom_f - 1) < 0.2)
// return 1;
zoom( zoom_f);
nav_rect_move_last_x = x;
nav_rect_move_last_y = y;
}
break;
case glow_eEvent_ButtonRelease:
if ( nav_rect_movement_active) {
nav_rect_movement_active = 0;
nav_zoom();
}
if ( nav_rect_zoom_active) {
nav_rect_zoom_active = 0;
}
break;
default:
;
}
return 1;
}