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f037df0ab5
When changing the color, erase the cursor first, otherwise there is a drawing glitch Scenario: f(x)=1 g(x)=2 Cursor on f(x), go to g(x), go right -> the previous cursor left a dot
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
#include "round_cursor_view.h"
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namespace Shared {
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static constexpr KDCoordinate cursorSize = 10;
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static const uint8_t cursorMask[cursorSize][cursorSize] = {
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{0xFF, 0xFF, 0xFF, 0xED, 0xB6, 0xB6, 0xED, 0xFF, 0xFF, 0xFF},
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{0xFF, 0xFF, 0x7C, 0x06, 0x00, 0x00, 0x06, 0x7C, 0xFF, 0xFF},
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{0xFF, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0xFF},
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{0xED, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE5},
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{0xB6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xB6},
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{0xB6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xB6},
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{0xED, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE5},
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{0xFF, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0xFF},
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{0xFF, 0xFF, 0x7C, 0x06, 0x00, 0x00, 0x06, 0x7C, 0xFF, 0xFF},
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{0xFF, 0xFF, 0xFF, 0xED, 0xB6, 0xB6, 0xED, 0xFF, 0xFF, 0xFF},
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};
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static KDColor s_cursorWorkingBuffer[cursorSize*cursorSize];
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void RoundCursorView::drawRect(KDContext * ctx, KDRect rect) const {
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KDRect r = bounds();
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ctx->getPixels(r, m_underneathPixelBuffer);
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m_underneathPixelBufferLoaded = true;
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ctx->blendRectWithMask(r, m_color, (const uint8_t *)cursorMask, s_cursorWorkingBuffer);
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}
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KDSize RoundCursorView::minimalSizeForOptimalDisplay() const {
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return KDSize(cursorSize, cursorSize);
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}
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void RoundCursorView::setColor(KDColor color) {
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m_color = color;
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eraseCursorIfPossible();
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markRectAsDirty(bounds());
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}
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void RoundCursorView::setCursorFrame(KDRect f) {
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#if GRAPH_CURSOR_SPEEDUP
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/* TODO This is quite dirty (we are out of the dirty tracking and we assume
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* the cursor is the upmost view) but it works well. */
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if (m_frame == f) {
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return;
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}
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/* We want to avoid drawing the curve just because the cursor has been
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* repositioned, as it is very slow for non cartesian curves.*/
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if (eraseCursorIfPossible()) {
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// Set the frame
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m_frame = f;
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markRectAsDirty(bounds());
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return;
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}
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#endif
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CursorView::setCursorFrame(f);
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}
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#ifdef GRAPH_CURSOR_SPEEDUP
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bool RoundCursorView::eraseCursorIfPossible() {
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if (!m_underneathPixelBufferLoaded) {
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return false;
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}
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const KDRect currentFrame = absoluteVisibleFrame();
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if (currentFrame.isEmpty()) {
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return false;
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}
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// Erase the cursor
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KDContext * ctx = KDIonContext::sharedContext();
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ctx->setOrigin(currentFrame.origin());
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ctx->setClippingRect(currentFrame);
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ctx->fillRectWithPixels(KDRect(0,0,k_cursorSize, k_cursorSize), m_underneathPixelBuffer, s_cursorWorkingBuffer);
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// TODO Restore the context to previous values?
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return true;
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}
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#endif
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}
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