本文整理汇总了C++中DrawBuffer::DrawTexRect方法的典型用法代码示例。如果您正苦于以下问题：C++ DrawBuffer::DrawTexRect方法的具体用法？C++ DrawBuffer::DrawTexRect怎么用？C++ DrawBuffer::DrawTexRect使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DrawBuffer的用法示例。
在下文中一共展示了DrawBuffer::DrawTexRect方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: UITextureButton
int UITextureButton(UIContext *ctx, int id, const LayoutManager &layout, float w, float h, Texture *texture, int button_align, uint32_t color, int drop_shadow) // uses current UI atlas for fetching images.
{
float x, y;
layout.GetPos(&w, &h, &x, &y);
if (button_align & ALIGN_HCENTER) x -= w / 2;
if (button_align & ALIGN_VCENTER) y -= h / 2;
if (button_align & ALIGN_RIGHT) x -= w;
if (button_align & ALIGN_BOTTOMRIGHT) y -= h;
int txOffset = 0;
int clicked = 0;
for (int i = 0; i < MAX_POINTERS; i++) {
// Check whether the button should be hot, use a generous margin for touch ease
if (UIRegionHit(i, x, y, w, h, 8)) {
uistate.hotitem[i] = id;
if (uistate.activeitem[i] == 0 && uistate.mousedown[i])
uistate.activeitem[i] = id;
}
if (uistate.hotitem[i] == id) {
if (uistate.activeitem[i] == id) {
// Button is both 'hot' and 'active'
txOffset = 2;
} else {
// Button is merely 'hot'
}
} else {
// button is not hot, but it may be active
}
// If button is hot and active, but mouse button is not
// down, the user must have clicked the button.
if (uistate.mousedown[i] == 0 &&
uistate.hotitem[i] == id &&
uistate.activeitem[i] == id) {
clicked = 1;
}
}
if (texture) {
float tw = texture->Width();
float th = texture->Height();
// Adjust position so we don't stretch the image vertically or horizontally.
// TODO: Add a param to specify fit? The below assumes it's never too wide.
float nw = h * tw / th;
x += (w - nw) / 2.0f;
w = nw;
}
// Render button
int dropsize = 10;
if (drop_shadow && texture)
{
if (txOffset) {
dropsize = 3;
y += txOffset * 2;
}
ui_draw2d.DrawImage4Grid(drop_shadow, x - dropsize, y, x+w + dropsize, y+h+dropsize*1.5,
blackAlpha(0.5f), 1.0f);
ui_draw2d.Flush(true);
}
if (texture) {
texture->Bind(0);
} else {
ui_draw2d.DrawImage2GridH(theme.buttonImage, x, y, x + w, color);
ui_draw2d.Flush();
Texture::Unbind();
}
ui_draw2d.DrawTexRect(x, y, x+w, y+h, 0, 0, 1, 1, color);
ui_draw2d.Flush();
ctx->RebindTexture();
uistate.lastwidget = id;
return clicked;
}