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https://github.com/UpsilonNumworks/Upsilon.git
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101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
#include <escher/tab_view.h>
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#include <escher/tab_view_controller.h>
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extern "C" {
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#include <assert.h>
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}
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TabView::TabView() :
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View(),
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m_numberOfTabs(0),
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m_activeTabIndex(-1),
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m_selectedTabIndex(-1)
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{
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}
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int TabView::numberOfTabs() const {
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return m_numberOfTabs;
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}
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void TabView::drawRect(KDContext * ctx, KDRect rect) const {
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KDCoordinate height = bounds().height();
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KDCoordinate width = bounds().width();
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// Draw a separator with the content
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ctx->fillRect(KDRect(0, height-k_activeTabHeight, width, k_activeTabHeight), KDColorWhite);
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}
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void TabView::addTab(ViewController * controller) {
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assert(m_numberOfTabs < k_maxNumberOfTabs);
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uint8_t tabIndex = m_numberOfTabs;
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m_cells[tabIndex].setNamedController(controller);
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m_numberOfTabs++;
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markRectAsDirty(bounds());
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}
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void TabView::setActiveIndex(int index) {
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assert(index < m_numberOfTabs);
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if (m_activeTabIndex == index) {
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return;
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}
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if (m_activeTabIndex >= 0) {
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m_cells[m_activeTabIndex].setActive(false);
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}
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m_activeTabIndex = index;
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m_cells[m_activeTabIndex].setActive(true);
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}
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void TabView::setSelectedIndex(int index) {
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assert(index < m_numberOfTabs);
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if (m_selectedTabIndex == index) {
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return;
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}
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if (m_selectedTabIndex >= 0) {
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m_cells[m_selectedTabIndex].setSelected(false);
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}
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m_selectedTabIndex = index;
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if (m_selectedTabIndex >= 0) {
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m_cells[m_selectedTabIndex].setSelected(true);
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}
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}
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int TabView::numberOfSubviews() const {
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return m_numberOfTabs;
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}
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View * TabView::subviewAtIndex(int index) {
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assert(index < m_numberOfTabs);
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return &m_cells[index];
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}
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void TabView::layoutSubviews() {
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KDCoordinate emptyWidth = bounds().width();
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for (int i=0; i<m_numberOfTabs; i++) {
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emptyWidth -= m_cells[i].minimalSizeForOptimalDisplay().width();
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}
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KDCoordinate widthUsed = 0;
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for (int i=0; i<m_numberOfTabs; i++) {
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KDCoordinate tabWidth = m_cells[i].minimalSizeForOptimalDisplay().width() + emptyWidth/m_numberOfTabs;
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/* Avoid a unused one-pixel-width vertical on the left due to rounding error */
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if (i == m_numberOfTabs - 1) {
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tabWidth = bounds().width() - widthUsed;
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}
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KDRect cellFrame = KDRect(
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widthUsed, 0,
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tabWidth, m_frame.height() - k_activeTabHeight
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);
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m_cells[i].setFrame(cellFrame);
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widthUsed += tabWidth;
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}
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}
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#if ESCHER_VIEW_LOGGING
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const char * TabView::className() const {
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return "TabView";
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}
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void TabView::logAttributes(std::ostream &os) const {
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View::logAttributes(os);
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os << " numberOfTabs=\"" << (int)m_numberOfTabs << "\"";
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os << " activeTabIndex=\"" << (int)m_activeTabIndex << "\"";
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}
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#endif
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