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[poincare] Create a class integral layout

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Change-Id: I0d41d9b92477837ed367e6a2c4359b609aa8e1c1
This commit is contained in:
Émilie Feral
2017-01-13 17:39:35 +01:00
parent 8eed045315
commit 863200445b
3 changed files with 123 additions and 0 deletions
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1
poincare/Makefile
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@@ -42,6 +42,7 @@ objs += $(addprefix poincare/src/layout/,\
expression_layout.o\
fraction_layout.o\
horizontal_layout.o\
integral_layout.o\
matrix_layout.o\
nth_root_layout.o\
parenthesis_layout.o\

93
poincare/src/layout/integral_layout.cpp Normal file
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@@ -0,0 +1,93 @@
#include "integral_layout.h"
#include <string.h>
#include <assert.h>
const uint8_t topSymbolPixel[IntegralLayout::k_symbolHeight][IntegralLayout::k_symbolWidth] = {
{0x00, 0x00, 0xFF, 0xFF},
{0xFF, 0xFF, 0x00, 0xFF},
{0xFF, 0xFF, 0x00, 0x00},
{0xFF, 0xFF, 0x00, 0x00},
};
const uint8_t bottomSymbolPixel[IntegralLayout::k_symbolHeight][IntegralLayout::k_symbolWidth] = {
{0x00, 0x00, 0xFF, 0xFF},
{0x00, 0x00, 0xFF, 0xFF},
{0xFF, 0x00, 0xFF, 0xFF},
{0xFF, 0xFF, 0x00, 0x00},
};
IntegralLayout::IntegralLayout(ExpressionLayout * lowerBoundLayout, ExpressionLayout * upperBoundLayout, ExpressionLayout * integrandLayout) :
ExpressionLayout(),
m_lowerBoundLayout(lowerBoundLayout),
m_upperBoundLayout(upperBoundLayout),
m_integrandLayout(integrandLayout)
{
m_lowerBoundLayout->setParent(this);
m_upperBoundLayout->setParent(this);
m_integrandLayout->setParent(this);
m_baseline = m_upperBoundLayout->size().height() + k_integrandHeigthMargin + m_integrandLayout->baseline();
}
IntegralLayout::~IntegralLayout() {
delete m_lowerBoundLayout;
delete m_upperBoundLayout;
delete m_integrandLayout;
}
void IntegralLayout::render(KDContext * ctx, KDPoint p, KDColor expressionColor, KDColor backgroundColor) {
KDSize integrandSize = m_integrandLayout->size();
KDSize upperBoundSize = m_upperBoundLayout->size();
KDColor workingBuffer[k_symbolWidth*k_symbolHeight];
KDRect topSymbolFrame(p.x() + k_symbolWidth + k_lineThickness, p.y() + upperBoundSize.height() - k_boundHeightMargin,
k_symbolWidth, k_symbolHeight);
ctx->blendRectWithMask(topSymbolFrame, expressionColor, (const uint8_t *)topSymbolPixel, (KDColor *)workingBuffer);
KDRect bottomSymbolFrame(p.x(),
p.y() + upperBoundSize.height() + 2*k_integrandHeigthMargin + integrandSize.height() + k_boundHeightMargin - k_symbolHeight,
k_symbolWidth, k_symbolHeight);
ctx->blendRectWithMask(bottomSymbolFrame, expressionColor, (const uint8_t *)bottomSymbolPixel, (KDColor *)workingBuffer);
ctx->fillRect(KDRect(p.x() + k_symbolWidth, p.y() + upperBoundSize.height() - k_boundHeightMargin, k_lineThickness,
2*k_boundHeightMargin+2*k_integrandHeigthMargin+integrandSize.height()), expressionColor);
}
KDSize IntegralLayout::computeSize() {
KDSize integrandSize = m_integrandLayout->size();
KDSize lowerBoundSize = m_lowerBoundLayout->size();
KDSize upperBoundSize = m_upperBoundLayout->size();
return KDSize(
k_symbolWidth+k_lineThickness+k_boundWidthMargin+max(lowerBoundSize.width(), upperBoundSize.width())+k_integrandWidthMargin+integrandSize.width(),
upperBoundSize.height()+ 2*k_integrandHeigthMargin+integrandSize.height()+lowerBoundSize.height());
}
ExpressionLayout * IntegralLayout::child(uint16_t index) {
switch (index) {
case 0:
return m_upperBoundLayout;
case 1:
return m_lowerBoundLayout;
case 2:
return m_integrandLayout;
default:
return nullptr;
}
}
KDPoint IntegralLayout::positionOfChild(ExpressionLayout * child) {
KDSize integrandSize = m_integrandLayout->size();
KDSize lowerBoundSize = m_lowerBoundLayout->size();
KDSize upperBoundSize = m_upperBoundLayout->size();
KDCoordinate x = 0;
KDCoordinate y = 0;
if (child == m_lowerBoundLayout) {
x = k_symbolWidth+k_lineThickness+k_boundWidthMargin;
y = upperBoundSize.height()+2*k_integrandHeigthMargin+integrandSize.height();
} else if (child == m_upperBoundLayout) {
x = k_symbolWidth+k_lineThickness+k_boundWidthMargin;;
y = 0;
} else if (child == m_integrandLayout) {
x = k_symbolWidth +k_lineThickness+ k_boundWidthMargin+max(lowerBoundSize.width(), upperBoundSize.width())+k_integrandWidthMargin;
y = upperBoundSize.height()+k_integrandHeigthMargin;
} else {
assert(false);
}
return KDPoint(x,y);
}

29
poincare/src/layout/integral_layout.h Normal file
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@@ -0,0 +1,29 @@
#ifndef POINCARE_INTEGRAL_LAYOUT_H
#define POINCARE_INTEGRAL_LAYOUT_H
#include <poincare/expression.h>
#include <poincare/expression_layout.h>
class IntegralLayout : public ExpressionLayout {
public:
IntegralLayout(ExpressionLayout * lowerBoundLayout, ExpressionLayout * upperBoundLayout, ExpressionLayout * integrandLayout);
~IntegralLayout();
constexpr static KDCoordinate k_symbolHeight = 4;
constexpr static KDCoordinate k_symbolWidth = 4;
protected:
void render(KDContext * ctx, KDPoint p, KDColor expressionColor, KDColor backgroundColor) override;
KDSize computeSize() override;
ExpressionLayout * child(uint16_t index) override;
KDPoint positionOfChild(ExpressionLayout * child) override;
private:
constexpr static KDCoordinate k_boundHeightMargin = 8;
constexpr static KDCoordinate k_boundWidthMargin = 5;
constexpr static KDCoordinate k_integrandWidthMargin = 2;
constexpr static KDCoordinate k_integrandHeigthMargin = 2;
constexpr static KDCoordinate k_lineThickness = 1;
ExpressionLayout * m_lowerBoundLayout;
ExpressionLayout * m_upperBoundLayout;
ExpressionLayout * m_integrandLayout;
};
#endif