Rect TextNode::generateBoundingBox()
{
Rect boundingBox = Node::generateBoundingBox();
if(mFontColor.isVisible())
{
NVGcontext& nanoVgContext = Application::getNanoVgContext();
nvgSave(&nanoVgContext);
float bounds[4];
setupContext(nanoVgContext);
for(const Text& text : mTexts)
{
const char* charArray = text.getString().getCharArray();
float positionX = text.getPosition().getX();
float positionY = text.getPosition().getY();
if(isPositive(text.getBoxWidth()))
{
nvgTextBoxBounds(&nanoVgContext, positionX, positionY, text.getBoxWidth(),
charArray, nullptr, bounds);
}
else
{
nvgTextBounds(&nanoVgContext, positionX, positionY, charArray, nullptr, bounds);
}
boundingBox.join(Rect(Point(bounds[0], bounds[1]), Point(bounds[2], bounds[3])));
}
nvgRestore(&nanoVgContext);
}
return boundingBox;
}
void Screen::drawWidgets() {
if (!mVisible)
return;
glfwMakeContextCurrent(mGLFWWindow);
glfwGetFramebufferSize(mGLFWWindow, &mFBSize[0], &mFBSize[1]);
glfwGetWindowSize(mGLFWWindow, &mSize[0], &mSize[1]);
glViewport(0, 0, mFBSize[0], mFBSize[1]);
/* Calculate pixel ratio for hi-dpi devices. */
mPixelRatio = (float) mFBSize[0] / (float) mSize[0];
nvgBeginFrame(mNVGContext, mSize[0], mSize[1], mPixelRatio);
draw(mNVGContext);
double elapsed = glfwGetTime() - mLastInteraction;
if (elapsed > 0.5f) {
/* Draw tooltips */
const Widget *widget = findWidget(mMousePos);
if (widget && !widget->tooltip().empty()) {
int tooltipWidth = 150;
float bounds[4];
nvgFontFace(mNVGContext, "sans");
nvgFontSize(mNVGContext, 15.0f);
nvgTextAlign(mNVGContext, NVG_ALIGN_CENTER | NVG_ALIGN_TOP);
nvgTextLineHeight(mNVGContext, 1.1f);
Vector2i pos = widget->absolutePosition() +
Vector2i(widget->width() / 2, widget->height() + 10);
nvgTextBoxBounds(mNVGContext, pos.x(), pos.y(), tooltipWidth,
widget->tooltip().c_str(), nullptr, bounds);
nvgGlobalAlpha(mNVGContext,
std::min(1.0, 2 * (elapsed - 0.5f)) * 0.8);
nvgBeginPath(mNVGContext);
nvgFillColor(mNVGContext, Color(0, 255));
int h = (bounds[2] - bounds[0]) / 2;
nvgRoundedRect(mNVGContext, bounds[0] - 4 - h, bounds[1] - 4,
(int) (bounds[2] - bounds[0]) + 8,
(int) (bounds[3] - bounds[1]) + 8, 3);
int px = (int) ((bounds[2] + bounds[0]) / 2) - h;
nvgMoveTo(mNVGContext, px, bounds[1] - 10);
nvgLineTo(mNVGContext, px + 7, bounds[1] + 1);
nvgLineTo(mNVGContext, px - 7, bounds[1] + 1);
nvgFill(mNVGContext);
nvgFillColor(mNVGContext, Color(255, 255));
nvgFontBlur(mNVGContext, 0.0f);
nvgTextBox(mNVGContext, pos.x() - h, pos.y(), tooltipWidth,
widget->tooltip().c_str(), nullptr);
}
}
nvgEndFrame(mNVGContext);
}
const QRectF QNanoPainter::textBoundingBox(const QString &text, float x, float y, float maxWidth)
{
_checkAlignPixelsText(&x, &y);
_checkFont();
float bounds[4];
if (maxWidth < 0) {
nvgTextBounds(nvgCtx(), x, y, text.toUtf8().constData(), nullptr, bounds);
} else {
nvgTextBoxBounds(nvgCtx(), x, y, maxWidth, text.toUtf8().constData(), nullptr, bounds);
}
return QRectF(bounds[0], bounds[1], bounds[2]-bounds[0], bounds[3]-bounds[1]);
}
Vector2i Label::preferredSize(NVGcontext *ctx) const {
if (mCaption == "")
return Vector2i::Zero();
nvgFontFace(ctx, mFont.c_str());
nvgFontSize(ctx, fontSize());
if (mFixedSize.x() > 0) {
float bounds[4];
nvgTextAlign(ctx, NVG_ALIGN_LEFT | NVG_ALIGN_TOP);
nvgTextBoxBounds(ctx, mPos.x(), mPos.y(), mFixedSize.x(), mCaption.c_str(), nullptr, bounds);
return Vector2i(
mFixedSize.x(), (bounds[3]-bounds[1])
);
} else {
nvgTextAlign(ctx, NVG_ALIGN_LEFT | NVG_ALIGN_MIDDLE);
return Vector2i(
nvgTextBounds(ctx, 0, 0, mCaption.c_str(), nullptr, nullptr),
mTheme->mStandardFontSize
);
}
}
void drawParagraph(struct NVGcontext* vg, float x, float y, float width, float height, float mx, float my)
{
struct NVGtextRow rows[3];
struct NVGglyphPosition glyphs[100];
const char* text = "This is longer chunk of text.\n \n Would have used lorem ipsum but she was busy jumping over the lazy dog with the fox and all the men who came to the aid of the party.";
const char* start;
const char* end;
int nrows, i, nglyphs, j, lnum = 0;
float lineh;
float caretx, px;
float bounds[4];
float gx = 0.0f, gy = 0.0f;
int gutter = 0;
NVG_NOTUSED(height);
nvgSave(vg);
nvgFontSize(vg, 18.0f);
nvgFontFace(vg, "sans");
nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_TOP);
nvgTextMetrics(vg, NULL, NULL, &lineh);
// The text break API can be used to fill a large buffer of rows,
// or to iterate over the text just few lines (or just one) at a time.
// The "next" variable of the last returned item tells where to continue.
start = text;
end = text + strlen(text);
for (nrows = nvgTextBreakLines(vg, start, end, width, rows, 3); 0 != nrows; nrows = nvgTextBreakLines(vg, start, end, width, rows, 3) )
{
for (i = 0; i < nrows; i++) {
struct NVGtextRow* row = &rows[i];
int hit = mx > x && mx < (x+width) && my >= y && my < (y+lineh);
nvgBeginPath(vg);
nvgFillColor(vg, nvgRGBA(255,255,255,hit?64:8) );
nvgRect(vg, x, y, row->width, lineh);
nvgFill(vg);
nvgFillColor(vg, nvgRGBA(255,255,255,255) );
nvgText(vg, x, y, row->start, row->end);
if (hit) {
caretx = (mx < x+row->width/2) ? x : x+row->width;
px = x;
nglyphs = nvgTextGlyphPositions(vg, x, y, row->start, row->end, glyphs, 100);
for (j = 0; j < nglyphs; j++) {
float x0 = glyphs[j].x;
float x1 = (j+1 < nglyphs) ? glyphs[j+1].x : x+row->width;
float tgx = x0 * 0.3f + x1 * 0.7f;
if (mx >= px && mx < tgx)
caretx = glyphs[j].x;
px = tgx;
}
nvgBeginPath(vg);
nvgFillColor(vg, nvgRGBA(255,192,0,255) );
nvgRect(vg, caretx, y, 1, lineh);
nvgFill(vg);
gutter = lnum+1;
gx = x - 10;
gy = y + lineh/2;
}
lnum++;
y += lineh;
}
// Keep going...
start = rows[nrows-1].next;
}
if (gutter)
{
char txt[16];
bx::snprintf(txt, sizeof(txt), "%d", gutter);
nvgFontSize(vg, 13.0f);
nvgTextAlign(vg, NVG_ALIGN_RIGHT|NVG_ALIGN_MIDDLE);
nvgTextBounds(vg, gx,gy, txt, NULL, bounds);
nvgBeginPath(vg);
nvgFillColor(vg, nvgRGBA(255,192,0,255) );
nvgRoundedRect(vg
, bx::fround(bounds[0])-4.0f
, bx::fround(bounds[1])-2.0f
, bx::fround(bounds[2]-bounds[0])+8.0f
, bx::fround(bounds[3]-bounds[1])+4.0f
, (bx::fround(bounds[3]-bounds[1])+4.0f)/2.0f-1.0f
);
nvgFill(vg);
nvgFillColor(vg, nvgRGBA(32,32,32,255) );
nvgText(vg, gx,gy, txt, NULL);
}
y += 20.0f;
nvgFontSize(vg, 13.0f);
nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_TOP);
nvgTextLineHeight(vg, 1.2f);
nvgTextBoxBounds(vg, x,y, 150, "Hover your mouse over the text to see calculated caret position.", NULL, bounds);
nvgBeginPath(vg);
nvgFillColor(vg, nvgRGBA(220,220,220,255) );
nvgRoundedRect(vg
, bx::fround(bounds[0]-2.0f)
, bx::fround(bounds[1]-2.0f)
, bx::fround(bounds[2]-bounds[0])+4.0f
, bx::fround(bounds[3]-bounds[1])+4.0f
, 3.0f
);
px = float( (int)( (bounds[2]+bounds[0])/2) );
nvgMoveTo(vg, px,bounds[1] - 10);
nvgLineTo(vg, px+7,bounds[1]+1);
nvgLineTo(vg, px-7,bounds[1]+1);
nvgFill(vg);
nvgFillColor(vg, nvgRGBA(0,0,0,220) );
nvgTextBox(vg, x,y, 150, "Hover your mouse over the text to see calculated caret position.", NULL);
nvgRestore(vg);
}