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rework clipping

This commit is contained in:
Vadim Lopatin 2014-11-28 15:57:20 +03:00
parent b1e133c21b
commit 108709d0de
7 changed files with 55 additions and 32 deletions
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49
src/dlangui/graphics/drawbuf.d
View File

@ -207,27 +207,36 @@ class DrawBuf : RefCountedObject {
// ===================================================
// clipping rectangle functions
/// init clip rectangle to full buffer size
void resetClipping() {
_clipRect = Rect(0, 0, width, height);
}
/// returns clipping rectangle, when clipRect.isEmpty == true -- means no clipping.
@property ref Rect clipRect() { return _clipRect; }
/// returns clipping rectangle, or (0,0,dx,dy) when no clipping.
@property Rect clipOrFullRect() { return _clipRect.empty ? Rect(0,0,width,height) : _clipRect; }
//@property Rect clipOrFullRect() { return _clipRect.empty ? Rect(0,0,width,height) : _clipRect; }
/// sets new clipping rectangle, when clipRect.isEmpty == true -- means no clipping.
@property void clipRect(const ref Rect rect) {
_clipRect = rect;
_clipRect.intersect(Rect(0, 0, width, height));
}
/// sets new clipping rectangle, when clipRect.isEmpty == true -- means no clipping.
/// sets new clipping rectangle, intersect with previous one.
@property void intersectClipRect(const ref Rect rect) {
if (_clipRect.empty)
_clipRect = rect;
else
_clipRect.intersect(rect);
//if (_clipRect.empty)
// _clipRect = rect;
//else
_clipRect.intersect(rect);
_clipRect.intersect(Rect(0, 0, width, height));
}
/// returns true if rectangle is completely clipped out and cannot be drawn.
@property bool isClippedOut(const ref Rect rect) {
//Rect rc = clipOrFullRect();
return !_clipRect.intersects(rect);
}
/// apply clipRect and buffer bounds clipping to rectangle
bool applyClipping(ref Rect rc) {
if (!_clipRect.empty())
rc.intersect(_clipRect);
//if (!_clipRect.empty())
rc.intersect(_clipRect);
if (rc.left < 0)
rc.left = 0;
if (rc.top < 0)
@ -242,12 +251,12 @@ class DrawBuf : RefCountedObject {
bool applyClipping(ref Rect rc, ref Rect rc2) {
if (rc.empty || rc2.empty)
return false;
if (!_clipRect.empty())
if (!rc.intersects(_clipRect))
return false;
//if (!_clipRect.empty())
if (!rc.intersects(_clipRect))
return false;
if (rc.width == rc2.width && rc.height == rc2.height) {
// unscaled
if (!_clipRect.empty()) {
//if (!_clipRect.empty) {
if (rc.left < _clipRect.left) {
rc2.left += _clipRect.left - rc.left;
rc.left = _clipRect.left;
@ -264,7 +273,7 @@ class DrawBuf : RefCountedObject {
rc2.bottom -= rc.bottom - _clipRect.bottom;
rc.bottom = _clipRect.bottom;
}
}
//}
if (rc.left < 0) {
rc2.left += -rc.left;
rc.left = 0;
@ -287,7 +296,7 @@ class DrawBuf : RefCountedObject {
int dstdy = rc.height;
int srcdx = rc2.width;
int srcdy = rc2.height;
if (!_clipRect.empty()) {
//if (!_clipRect.empty) {
if (rc.left < _clipRect.left) {
rc2.left += (_clipRect.left - rc.left) * srcdx / dstdx;
rc.left = _clipRect.left;
@ -304,7 +313,7 @@ class DrawBuf : RefCountedObject {
rc2.bottom -= (rc.bottom - _clipRect.bottom) * srcdy / dstdy;
rc.bottom = _clipRect.bottom;
}
}
//}
if (rc.left < 0) {
rc2.left -= (rc.left) * srcdx / dstdx;
rc.left = 0;
@ -397,7 +406,9 @@ class DrawBuf : RefCountedObject {
return this;
}
void clear() {}
void clear() {
resetClipping();
}
}
alias DrawBufRef = Ref!DrawBuf;
@ -576,7 +587,7 @@ class ColorDrawBufBase : DrawBuf {
ubyte[] src = glyph.glyph;
int srcdx = glyph.blackBoxX;
int srcdy = glyph.blackBoxY;
bool clipping = !_clipRect.empty();
bool clipping = true; //!_clipRect.empty();
color = applyAlpha(color);
for (int yy = 0; yy < srcdy; yy++) {
int liney = y + yy;
@ -646,6 +657,7 @@ class GrayDrawBuf : DrawBuf {
_dx = width;
_dy = height;
_buf.length = _dx * _dy;
resetClipping();
}
override void fill(uint color) {
int len = _dx * _dy;
@ -772,7 +784,7 @@ class GrayDrawBuf : DrawBuf {
ubyte[] src = glyph.glyph;
int srcdx = glyph.blackBoxX;
int srcdy = glyph.blackBoxY;
bool clipping = !_clipRect.empty();
bool clipping = true; //!_clipRect.empty();
ubyte cl = cast(ubyte)(color & 255);
for (int yy = 0; yy < srcdy; yy++) {
int liney = y + yy;
@ -854,6 +866,7 @@ class ColorDrawBuf : ColorDrawBufBase {
_dx = width;
_dy = height;
_buf.length = _dx * _dy;
resetClipping();
}
override void fill(uint color) {
int len = _dx * _dy;

2
src/dlangui/graphics/fonts.d
View File

@ -273,7 +273,7 @@ class Font : RefCountedObject {
if (_textSizeBuffer.length < text.length)
_textSizeBuffer.length = text.length;
int charsMeasured = measureText(text, _textSizeBuffer, MAX_WIDTH_UNSPECIFIED, tabSize, tabOffset, textFlags);
Rect clip = buf.clipOrFullRect;
Rect clip = buf.clipRect; //clipOrFullRect;
if (clip.empty)
return; // not visible - clipped out
if (y + height < clip.top || y >= clip.bottom)

1
src/dlangui/graphics/gldrawbuf.d
View File

@ -71,6 +71,7 @@ class GLDrawBuf : DrawBuf {
override void resize(int width, int height) {
_dx = width;
_dy = height;
resetClipping();
}
/// fill the whole buffer with solid color (no clipping applied)

1
src/dlangui/platforms/sdl/sdlapp.d
View File

@ -344,6 +344,7 @@ version(USE_SDL) {
if (!_drawbuf)
_drawbuf = new ColorDrawBuf(_dx, _dy);
_drawbuf.resize(_dx, _dy);
_drawbuf.resetClipping();
_drawbuf.fill(_backgroundColor);
onDraw(_drawbuf);
draw(_drawbuf);

1
src/dlangui/platforms/windows/winapp.d
View File

@ -281,6 +281,7 @@ class Win32Window : Window {
_drawbuf = new Win32ColorDrawBuf(_dx, _dy);
else
_drawbuf.resize(_dx, _dy);
_drawbuf.resetClipping();
return _drawbuf;
}
override void show() {

3
src/dlangui/widgets/controls.d
View File

@ -103,6 +103,7 @@ class TextWidget : Widget {
applyMargins(rc);
auto saver = ClipRectSaver(buf, rc, alpha);
applyPadding(rc);
FontRef font = font();
Point sz = font.textSize(text);
applyAlign(rc, sz);
@ -795,7 +796,7 @@ class ScrollBar : AbstractSlider, OnClickHandler {
/// Draw widget at its position to buffer
override void onDraw(DrawBuf buf) {
if (visibility != Visibility.Visible)
if (visibility != Visibility.Visible && !buf.isClippedOut(_pos))
return;
super.onDraw(buf);
Rect rc = _pos;

30
src/dlangui/widgets/scroll.d
View File

@ -99,18 +99,24 @@ class ScrollWidgetBase : WidgetGroup, OnScrollHandler {
return;
Rect rc = _pos;
applyMargins(rc);
auto saver = ClipRectSaver(buf, rc, alpha);
DrawableRef bg = backgroundDrawable;
if (!bg.isNull) {
bg.drawTo(buf, rc, state);
}
applyPadding(rc);
if (_hscrollbar)
_hscrollbar.onDraw(buf);
if (_vscrollbar)
_vscrollbar.onDraw(buf);
auto saver2 = ClipRectSaver(buf, _clientRect, alpha);
drawClient(buf);
{
auto saver = ClipRectSaver(buf, rc, alpha);
DrawableRef bg = backgroundDrawable;
if (!bg.isNull) {
bg.drawTo(buf, rc, state);
}
applyPadding(rc);
if (_hscrollbar)
_hscrollbar.onDraw(buf);
if (_vscrollbar)
_vscrollbar.onDraw(buf);
// apply clipping
{
auto saver2 = ClipRectSaver(buf, _clientRect, alpha);
drawClient(buf);
}
}
_needDraw = false;
}