bool GiGraphics::drawRect(const GiContext* ctx, const Box2d& rect,
bool modelUnit)
{
if (rect.isEmpty() && ctx && m_impl->canvas) {
rawRect(ctx, 0, 0, 0, 0);
return false;
}
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return !rect.isEmpty() && drawPolygon(ctx, 4, points, modelUnit);
}
Box2d GiTransform::setWorldLimits(const Box2d& rect)
{
Box2d ret = m_impl->rectLimitsW;
m_impl->rectLimitsW = rect.isEmpty() ? Box2d(Point2d::kOrigin(), 2e5f, 2e5f) : rect;
m_impl->rectLimitsW.normalize();
return ret;
}
float mgnear::roundRectHit(
const Box2d& rect, float rx, float ry,
const Point2d& pt, float tol, Point2d& nearpt, int& segment)
{
rx = fabsf(rx);
if (ry < _MGZERO)
ry = rx;
rx = mgMin(rx, rect.width() * 0.5f);
ry = mgMin(ry, rect.height() * 0.5f);
segment = -1;
Point2d ptTemp, ptTemp2;
float dist, distMin = _FLT_MAX;
Point2d pts[8];
const Box2d rectTol (pt, 2 * tol, 2 * tol);
// 顶边上的两个圆弧切点，左，右
pts[0] = RoundRectTan(0, 1, rect, rx);
pts[1] = RoundRectTan(1, 0, rect, rx);
// 右边上的两个圆弧切点，上，下
pts[2] = RoundRectTan(1, 2, rect, ry);
pts[3] = RoundRectTan(2, 1, rect, ry);
// 底边上的两个圆弧切点，右，左
pts[4] = RoundRectTan(2, 3, rect, rx);
pts[5] = RoundRectTan(3, 2, rect, rx);
// 左边上的两个圆弧切点，下，上
pts[6] = RoundRectTan(3, 0, rect, ry);
pts[7] = RoundRectTan(0, 3, rect, ry);
for (int i = 0; i < 4; i++)
{
Box2d rcLine (pts[2 * i], pts[2 * i + 1]);
if (rcLine.isEmpty() || rectTol.isIntersect(rcLine))
{
dist = mglnrel::ptToLine(pts[2 * i], pts[2 * i + 1], pt, ptTemp);
if (dist <= tol && dist < distMin)
{
distMin = dist;
nearpt = ptTemp;
segment = 4 + i;
}
}
}
if (rx > _MGZERO && ry > _MGZERO)
{
_RoundRectHit(rect, rx, ry, pt, tol,
rectTol, pts, distMin, nearpt, segment);
}
return distMin;
}
bool GiGraphics::drawRoundRect(const GiContext* ctx,
const Box2d& rect, float rx, float ry,
bool modelUnit)
{
if (m_impl->drawRefcnt == 0 || rect.isEmpty())
return false;
GiLock lock (&m_impl->drawRefcnt);
bool ret = false;
if (ry < _MGZERO)
ry = rx;
if (!DRAW_RECT(m_impl, modelUnit).isIntersect(rect)) // 全部在显示区域外
return false;
if (rx < _MGZERO)
{
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return drawPolygon(ctx, 4, points);
}
else
{
Point2d points[16];
mgRoundRectToBeziers(points, rect, rx, ry);
S2D(xf(), modelUnit).TransformPoints(16, points);
ret = rawBeginPath();
if (ret)
{
ret = rawMoveTo(points[0].x, points[0].y);
ret = rawBezierTo(&points[1], 3);
ret = rawLineTo(points[4].x, points[4].y);
ret = rawBezierTo(&points[5], 3);
ret = rawLineTo(points[8].x, points[8].y);
ret = rawBezierTo(&points[9], 3);
ret = rawLineTo(points[12].x, points[12].y);
ret = rawBezierTo(&points[13], 3);
ret = rawClosePath();
ret = rawEndPath(ctx, true);
}
}
return ret;
}
void MgCmdManagerImpl::getBoundingBox(Box2d& box, const MgMotion* sender)
{
MgCommand* cmd = sender->cmds()->getCommand();
Box2d selbox;
if (cmd && strcmp(cmd->getName(), MgCmdSelect::Name()) == 0) {
MgCmdSelect* sel = (MgCmdSelect*)cmd;
selbox = sel->getBoundingBox(sender);
}
box = selbox.isEmpty() ? Box2d(sender->pointM, 0, 0) : selbox;
box *= sender->view->xform()->modelToDisplay();
box.normalize();
}
bool GiGraphics::drawRoundRect(const GiContext* ctx,
const Box2d& rect, float rx, float ry,
bool modelUnit)
{
if (rect.isEmpty() || isStopping())
return false;
bool ret = false;
if (ry < _MGZERO)
ry = rx;
if (!DRAW_RECT(m_impl, modelUnit).isIntersect(rect)) // 全部在显示区域外
return false;
if (rx < _MGZERO) {
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return drawPolygon(ctx, 4, points);
} else {
Point2d pxs[16];
mgcurv::roundRectToBeziers(pxs, rect, rx, ry);
S2D(xf(), modelUnit).transformPoints(16, pxs);
ret = rawBeginPath();
if (ret) {
rawMoveTo(pxs[0].x, pxs[0].y);
rawBezierTo(pxs[1].x, pxs[1].y, pxs[2].x, pxs[2].y, pxs[3].x, pxs[3].y);
rawLineTo(pxs[4].x, pxs[4].y);
rawBezierTo(pxs[5].x, pxs[5].y, pxs[6].x, pxs[6].y, pxs[7].x, pxs[7].y);
rawLineTo(pxs[8].x, pxs[8].y);
rawBezierTo(pxs[9].x, pxs[9].y, pxs[10].x, pxs[10].y, pxs[11].x, pxs[11].y);
rawLineTo(pxs[12].x, pxs[12].y);
rawBezierTo(pxs[13].x, pxs[13].y, pxs[14].x, pxs[14].y, pxs[15].x, pxs[15].y);
rawClosePath();
ret = rawEndPath(ctx, true);
}
}
return ret;
}
static bool AdjustCenterIn(bool adjust, const Box2d& box, const Box2d& limitsW,
Point2d &ptW, float halfw, float halfh)
{
Box2d rectW(limitsW);
rectW.inflate(2);
if (!limitsW.isEmpty() && !rectW.contains(box)) {
if (adjust) {
AdjustCenterW(ptW, halfw, halfh, rectW);
}
else {
return false;
}
}
return true;
}
void mgnear::moveRectHandle(Box2d& rect, int index,
const Point2d& pt, bool lockCornerScale)
{
Point2d pts[4];
for (int i = 0; i < 4; i++)
mgnear::getRectHandle(rect, index / 4 * 4 + i, pts[i]);
pts[index % 4] = pt;
if (index >= 0 && index < 4)
{
Point2d pt1(pt);
if (lockCornerScale && !rect.isEmpty()) {
Point2d& pt2 = pts[(index + 2) % 4];
float w = fabsf(pt2.x - pt.x);
float h = fabsf(pt2.y - pt.y);
if (w * rect.height() > h * rect.width())
h = w * rect.height() / rect.width();
else
w = h * rect.width() / rect.height();
pt1.x = pt2.x + w * (pt2.x > pt.x ? -1.f : 1.f);
pt1.y = pt2.y + h * (pt2.y > pt.y ? -1.f : 1.f);
}
if (index % 2 == 0)
{
pts[(index + 1) % 4].y = pt1.y;
pts[(index + 3) % 4].x = pt1.x;
}
else
{
pts[(index + 1) % 4].x = pt1.x;
pts[(index + 3) % 4].y = pt1.y;
}
rect.set(4, pts);
}
else if (index >= 4 && index < 8)
{
rect.set(pts[3].x, pts[2].y, pts[1].x, pts[0].y);
}
}
Vector2d moveActionsInView(Box2d& rect)
{
Vector2d off;
Box2d viewrect(0.f, 0.f, (float)xform()->getWidth(), (float)xform()->getHeight());
if (!rect.isEmpty() && !viewrect.contains(rect)) {
if (rect.xmin < 0) {
off.x = -rect.xmin;
}
else if (rect.xmax > viewrect.xmax) {
off.x = viewrect.xmax - rect.xmax;
}
if (rect.ymin < 0) {
off.y = -rect.ymin;
}
else if (rect.ymax > viewrect.ymax) {
off.y = viewrect.ymax - rect.ymax;
}
}
return off;
}
bool GiTransform::zoomTo(const Box2d& rectWorld, const RECT_2D* rcTo, bool adjust)
{
// 如果图形范围的宽或高接近于零，就返回
if (rectWorld.isEmpty())
return false;
// 计算像素到毫米的比例
const float d2mmX = m_impl->viewScale / m_impl->w2dx;
const float d2mmY = m_impl->viewScale / m_impl->w2dy;
// 计算目标窗口区域(毫米)
float w = 0, h = 0;
Point2d ptCen;
if (rcTo != NULL) {
w = fabsf(static_cast<float>(rcTo->right - rcTo->left));
h = fabsf(static_cast<float>(rcTo->bottom - rcTo->top));
ptCen.x = (rcTo->left + rcTo->right) * 0.5f;
ptCen.y = (rcTo->top + rcTo->bottom) * 0.5f;
}
if (w < 4 || h < 4) {
w = (float)m_impl->cxWnd;
h = (float)m_impl->cyWnd;
ptCen.set(w * 0.5f, h * 0.5f);
w -= 8;
h -= 8;
}
if (w < 4 || h < 4)
return false;
w *= d2mmX;
h *= d2mmY;
ptCen.scaleBy(d2mmX, d2mmY);
// 计算新显示比例 (中心不变，缩小窗口区域使得宽高比例和图形范围相同)
float scale;
if (h * rectWorld.width() > w * rectWorld.height()) {
//h = w * rectWorld.height() / rectWorld.width();
scale = w / rectWorld.width();
}
else {
//w = h * rectWorld.width() / rectWorld.height();
scale = h / rectWorld.height();
}
// 检查显示比例
if (!adjust && ScaleOutRange(scale, m_impl))
return false;
scale = mgMax(scale, m_impl->minViewScale);
scale = mgMin(scale, m_impl->maxViewScale);
// 计算在新显示比例下显示窗口中心的世界坐标
Point2d ptW;
ptW.x = rectWorld.center().x + (m_impl->cxWnd * d2mmX * 0.5f - ptCen.x) / scale;
ptW.y = rectWorld.center().y - (m_impl->cyWnd * d2mmY * 0.5f - ptCen.y) / scale;
// 检查新显示比例下显示窗口的世界坐标范围是否在极限范围内
float halfw = m_impl->cxWnd * d2mmX / scale * 0.5f;
float halfh = m_impl->cyWnd * d2mmY / scale * 0.5f;
Box2d box (ptW, 2 * halfw, 2 * halfh);
if (!AdjustCenterIn(adjust, box, m_impl->rectLimitsW, ptW, halfw, halfh)) {
return false;
}
return m_impl->zoomNoAdjust(ptW, scale);
}
bool giPrintSetup(GiTransform& xf, HDC hdc, const Box2d& rectShow, bool bWorldRect,
const RECT* margin, float scale,
float offsetX, float offsetY)
{
if (hdc == NULL || rectShow.isEmpty())
return false;
int dpix = GetDeviceCaps(hdc, LOGPIXELSX); // 每英寸的像素数
int dpiy = GetDeviceCaps(hdc, LOGPIXELSY); // 每英寸的像素数
int width = GetDeviceCaps(hdc, PHYSICALWIDTH); // 页面宽，像素
int height = GetDeviceCaps(hdc, PHYSICALHEIGHT); // 页面高，像素
int cx = GetDeviceCaps(hdc, HORZRES); // 可打印宽度，像素
int cy = GetDeviceCaps(hdc, VERTRES); // 可打印高度，像素
int ml = GetDeviceCaps(hdc, PHYSICALOFFSETX); // 左最小边距，像素
int mt = GetDeviceCaps(hdc, PHYSICALOFFSETY); // 上最小边距，像素
int mr = width - cx - ml; // 右最小边距，像素
int mb = height - cy - mt; // 下最小边距，像素
RECT rc = { 0, 0, cx, cy }; // 纸上打印范围，像素
if (margin != NULL) // 指定了页边距
{
int n;
if (ml < (n = MulDiv(margin->left, dpix, 2540)))
rc.left += n - ml;
if (mt < (n = MulDiv(margin->top, dpiy, 2540)))
rc.top += n - mt;
if (mr < (n = MulDiv(margin->right, dpix, 2540)))
rc.right -= n - mr;
if (mb < (n = MulDiv(margin->bottom, dpiy, 2540)))
rc.bottom -= n - mb;
if (rc.right - rc.left < 10)
{
rc.left = 0;
rc.right = cx;
}
if (rc.bottom - rc.top < 10)
{
rc.top = 0;
rc.bottom = cy;
}
}
::InflateRect(&rc, -1, -1); // 缩小纸上打印范围，以便放缩后不丢失像素
xf.setWndSize(cx, cy);
xf.setResolution((float)dpix, (float)dpiy);
Box2d rectShowW = rectShow;
if (!bWorldRect)
rectShowW *= xf.modelToWorld();
Box2d rectOld = xf.setWorldLimits(Box2d());
RECT2D rc2d(giConvertRect(rc));
bool ret = xf.zoomTo(rectShowW, &rc2d, true);
if (scale >= xf.getMinViewScale() && scale <= xf.getMaxViewScale())
{
ret = ret && xf.zoomScale(scale, NULL, true);
xf.zoom(xf.getCenterW() - Vector2d(offsetX, offsetY), xf.getViewScale());
}
xf.setWorldLimits(rectOld);
return ret;
}
bool MgCmdManagerImpl::showInSelect(const MgMotion* sender, int selState, const MgShape* shape, const Box2d& selbox)
{
if (sender->view->getCmdSubject()->selectActionsNeedHided(sender)) {
return false;
}
int actions[12];
int n = 0;
bool isslines = (shape && selState == kMgSelOneShape
&& shape->shapec()->isKindOf(kMgShapeSplines));
bool isOpenLines = (shape && selState == kMgSelOneShape
&& shape->shapec()->isKindOf(kMgShapeLines)
&& !shape->shapec()->isClosed());
bool locked = shape && shape->shapec()->getFlag(kMgShapeLocked);
bool fixedLength = shape && shape->shapec()->getFlag(kMgFixedLength);
switch (selState) {
case kMgSelNone:
break;
case kMgSelMultiShapes:
if (shape && shape->getParent()
&& shape->getParent()->getOwner()->isKindOf(kMgShapeDoc)) {
actions[n++] = kMgActionGroup;
}
case kMgSelOneShape:
if (!locked && !sender->view->useFinger()) {
actions[n++] = kMgActionDelete;
}
actions[n++] = kMgActionClone;
if (!locked && shape
&& (shape->shapec()->isKindOf(kMgShapeImage)
|| shape->shapec()->isKindOf(kMgShapeLine))) {
actions[n++] = fixedLength ? kMgActionFreeLength : kMgActionFixedLength;
}
actions[n++] = locked ? kMgActionUnlocked : kMgActionLocked;
if (selState == kMgSelOneShape && !locked) {
actions[n++] = kMgActionEditVertex;
}
else {
//actions[n++] = kMgActionSelReset;
}
if (selState == kMgSelOneShape
&& shape && shape->shapec()->isClosed()
&& !shape->shapec()->getFlag(kMgRotateDisnable)
&& !shape->shapec()->getFlag(kMgShapeLocked)
&& (shape->shapec()->isKindOf(kMgShapeParallel)
|| shape->shapec()->isKindOf(kMgShapeLines)) ) {
actions[n++] = kMgActionOverturn;
}
break;
case kMgSelVertexes:
if ((isslines || isOpenLines)
&& shape && !shape->shapec()->getFlag(kMgShapeLocked)) {
//actions[n++] = closed ? kMgActionOpened : kMgActionClosed;
actions[n++] = kMgActionAddVertex;
}
if (!locked && shape && shape->shapec()->isKindOf(kMgShapeLine)) {
actions[n++] = fixedLength ? kMgActionFreeLength : kMgActionFixedLength;
}
//actions[n++] = locked ? kMgActionUnlocked : kMgActionLocked;
actions[n++] = kMgActionHideVertex;
break;
case kMgSelVertex:
if ((isslines || isOpenLines)
&& shape && !shape->shapec()->getFlag(kMgShapeLocked)) {
//actions[n++] = closed ? kMgActionOpened : kMgActionClosed;
actions[n++] = kMgActionDelVertex;
}
if (!locked && shape && shape->shapec()->isKindOf(kMgShapeLine)) {
actions[n++] = fixedLength ? kMgActionFreeLength : kMgActionFixedLength;
}
//actions[n++] = locked ? kMgActionUnlocked : kMgActionLocked;
actions[n++] = kMgActionHideVertex;
break;
case kMgSelDraw:
break;
}
if (selState > kMgSelNone && selState <= kMgSelVertex && shape) {
mgvector<int> arr(actions, sizeof(actions)/sizeof(actions[0]));
n = sender->view->getCmdSubject()->addShapeActions(sender, arr, n, shape);
for (int i = 0; i < n; i++) {
actions[i] = arr.get(i);
}
if (shape->shapec()->isKindOf(kMgShapeGroup)
&& sender->view->shapeCanUngroup(shape)) {
actions[n++] = kMgActionUngroup;
}
}
actions[n++] = 0;
if (!selbox.isEmpty()) {
sender->view->redraw();
}
Box2d box(selbox.isEmpty() ? Box2d(sender->pointM, 0, 0) : selbox);
box *= sender->view->xform()->modelToDisplay();
return sender->view->showContextActions(selState, actions, box, shape);
}
