void
ButtonWindow::OnPaint(Canvas &canvas)
{
const bool focused = HasCursorKeys() ? HasFocus() : down;
if (focused) {
Pen pen(Layout::Scale(1), COLOR_BLACK);
canvas.Select(pen);
canvas.SelectHollowBrush();
canvas.Rectangle(-1, -1, canvas.GetWidth(), canvas.GetHeight());
}
PixelRect rc(2, 2, canvas.GetWidth() - 4, canvas.GetHeight() - 4);
if (down) {
rc.left += Layout::FastScale(1);
rc.top += Layout::FastScale(1);
}
canvas.DrawButton(GetClientRect(), down);
canvas.SetTextColor(IsEnabled()
? (IsDithered() && down ? COLOR_WHITE : COLOR_BLACK)
: COLOR_GRAY);
canvas.SetBackgroundTransparent();
unsigned style = GetTextStyle();
if (IsDithered())
style |= DT_UNDERLINE;
canvas.DrawFormattedText(&rc, text.c_str(), style);
}
void
CheckBoxControl::OnPaint(Canvas &canvas)
{
const auto &cb_look = look->check_box;
const bool focused = HasCursorKeys() && HasFocus();
if (focused)
canvas.Clear(cb_look.focus_background_brush);
else if (HaveClipping())
canvas.Clear(look->background_brush);
const auto &state_look = IsEnabled()
? (pressed
? cb_look.pressed
: (focused
? cb_look.focused
: cb_look.standard))
: cb_look.disabled;
unsigned size = canvas.GetHeight() - 4;
canvas.Select(state_look.box_brush);
canvas.Select(state_look.box_pen);
canvas.Rectangle(2, 2, size, size);
if (checked) {
canvas.Select(state_look.check_brush);
canvas.SelectNullPen();
BulkPixelPoint check_mark[] = {
{-8, -2},
{-3, 6},
{7, -9},
{8, -5},
{-3, 9},
{-9, 2},
};
unsigned top = canvas.GetHeight() / 2;
for (unsigned i = 0; i < ARRAY_SIZE(check_mark); ++i) {
check_mark[i].x = (check_mark[i].x * (int)size) / 24 + top;
check_mark[i].y = (check_mark[i].y * (int)size) / 24 + top;
}
canvas.DrawPolygon(check_mark, ARRAY_SIZE(check_mark));
}
canvas.Select(*cb_look.font);
canvas.SetTextColor(state_look.text_color);
canvas.SetBackgroundTransparent();
canvas.DrawText(canvas.GetHeight() + 2, 2, caption.c_str());
}
void
TerrainPreviewWindow::OnPaint(Canvas &canvas)
{
const GlueMapWindow *map = UIGlobals::GetMap();
if (map == nullptr)
return;
MapWindowProjection projection = map->VisibleProjection();
if (!projection.IsValid()) {
/* TODO: initialise projection to middle of map instead of bailing
out */
canvas.ClearWhite();
return;
}
projection.SetScreenSize(canvas.GetSize());
projection.SetScreenOrigin(canvas.GetWidth() / 2, canvas.GetHeight() / 2);
Angle sun_azimuth(Angle::Degrees(-45));
if (renderer.GetSettings().slope_shading == SlopeShading::SUN &&
CommonInterface::Calculated().sun_data_available)
sun_azimuth = CommonInterface::Calculated().sun_azimuth;
renderer.Generate(projection, sun_azimuth);
#ifdef ENABLE_OPENGL
/* enable clipping because the OpenGL terrain renderer uses a large
texture that exceeds the window dimensions */
GLCanvasScissor scissor(canvas);
#endif
renderer.Draw(canvas, projection);
}
gcc_pure
static bool
IsCircleVisible(const Canvas &canvas, PixelPoint center, unsigned radius)
{
return int(center.x + radius) >= 0 && center.x < int(canvas.GetWidth() + radius) &&
int(center.y + radius) >= 0 && center.y < int(canvas.GetHeight() + radius);
}
void
BufferCanvas::Commit(Canvas &other)
{
assert(IsDefined());
assert(active);
assert(GetWidth() == other.GetWidth());
assert(GetHeight() == other.GetHeight());
if (frame_buffer != NULL) {
frame_buffer->Unbind();
/* restore the old viewport */
assert(OpenGL::translate == RasterPoint(0, 0));
OpenGL::SetupViewport(old_size);
OpenGL::translate = old_translate;
glPopMatrix();
/* copy frame buffer to screen */
CopyTo(other);
} else {
assert(offset == other.offset);
/* copy screen to texture */
CopyToTexture(*texture, GetRect());
}
active = false;
}
virtual void OnPaint(Canvas &canvas) override {
canvas.ClearWhite();
const GeoPoint a(Angle::Degrees(7.70722),
Angle::Degrees(51.052));
const GeoPoint b(Angle::Degrees(11.5228),
Angle::Degrees(50.3972));
WindowProjection projection;
projection.SetScreenOrigin(canvas.GetWidth() / 2, canvas.GetHeight() / 2);
projection.SetGeoLocation(a.Middle(b));
projection.SetScreenSize(canvas.GetSize());
projection.SetScaleFromRadius(fixed(400000));
projection.UpdateScreenBounds();
canvas.SelectBlackPen();
canvas.SelectHollowBrush();
RasterPoint pa = projection.GeoToScreen(a);
canvas.DrawCircle(pa.x, pa.y, 4);
RasterPoint pb = projection.GeoToScreen(b);
canvas.DrawCircle(pb.x, pb.y, 4);
RenderFAISector(canvas, projection, a, b, false, settings);
}
void
WindowList::Paint(Canvas &canvas)
{
const auto &list = this->list;
auto begin = list.rbegin(), end = list.rend();
/* find the last full window which covers all the other windows
behind it */
for (auto i = begin; i != end; ++i) {
Window &child = **i;
if (IsFullWindow(child, canvas.GetWidth(), canvas.GetHeight()))
begin = i;
}
for (auto i = begin; i != end; ++i) {
Window &child = **i;
if (!child.IsVisible())
continue;
SubCanvas sub_canvas(canvas, { child.GetLeft(), child.GetTop() },
child.GetSize());
#ifdef USE_MEMORY_CANVAS
if (sub_canvas.GetWidth() == 0 || sub_canvas.GetHeight() == 0)
/* this child window is completely outside the physical
screen */
continue;
#endif
child.Setup(sub_canvas);
child.OnPaint(sub_canvas);
}
}
void
InfoBoxPreview::OnPaint(Canvas &canvas)
{
const unsigned i = this - previews;
const bool is_current = i == current_preview;
if (is_current)
canvas.Clear(COLOR_BLACK);
else
canvas.ClearWhite();
canvas.SelectHollowBrush();
canvas.SelectBlackPen();
canvas.Rectangle(0, 0, canvas.GetWidth() - 1, canvas.GetHeight() - 1);
InfoBoxFactory::Type type = data.contents[i];
const TCHAR *caption = type < InfoBoxFactory::NUM_TYPES
? InfoBoxFactory::GetCaption(type)
: NULL;
if (caption == NULL)
caption = _("Invalid");
else
caption = gettext(caption);
canvas.Select(*look->title.font);
canvas.SetBackgroundTransparent();
canvas.SetTextColor(is_current ? COLOR_WHITE : COLOR_BLACK);
canvas.DrawText(2, 2, caption);
}
void
LargeTextWindow::OnPaint(Canvas &canvas)
{
canvas.ClearWhite();
PixelRect rc(0, 0, canvas.GetWidth() - 1, canvas.GetHeight() - 1);
canvas.DrawOutlineRectangle(rc.left, rc.top, rc.right, rc.bottom,
COLOR_BLACK);
if (value.empty())
return;
const PixelScalar padding = Layout::GetTextPadding();
rc.Grow(-padding);
canvas.SetBackgroundTransparent();
canvas.SetTextColor(COLOR_BLACK);
rc.top -= origin * GetFont().GetHeight();
#ifndef USE_GDI
canvas.Select(GetFont());
#endif
canvas.DrawFormattedText(&rc, value.c_str(), DT_LEFT | DT_WORDBREAK);
}
void
WindowList::Paint(Canvas &canvas)
{
const auto &list = this->list;
auto begin = list.rbegin(), end = list.rend();
/* find the last full window which covers all the other windows
behind it */
for (auto i = begin; i != end; ++i) {
Window &child = **i;
if (IsFullWindow(child, canvas.GetWidth(), canvas.GetHeight()))
begin = i;
}
for (auto i = begin; i != end; ++i) {
Window &child = **i;
if (!child.IsVisible())
continue;
SubCanvas sub_canvas(canvas, { child.GetLeft(), child.GetTop() },
child.GetSize());
child.Setup(sub_canvas);
child.OnPaint(sub_canvas);
}
}
gcc_pure
static bool
IsCircleVisible(const Canvas &canvas, int x, int y, unsigned radius)
{
return int(x + radius) >= 0 && x < int(canvas.GetWidth() + radius) &&
int(y + radius) >= 0 && y < int(canvas.GetHeight() + radius);
}
void
InfoBoxPreview::OnPaint(Canvas &canvas)
{
const bool is_current = i == parent->GetCurrentInfoBox();
if (is_current)
canvas.Clear(COLOR_BLACK);
else
canvas.ClearWhite();
canvas.SelectHollowBrush();
canvas.SelectBlackPen();
canvas.Rectangle(0, 0, canvas.GetWidth() - 1, canvas.GetHeight() - 1);
InfoBoxFactory::Type type = parent->GetContents(i);
const TCHAR *caption = type < InfoBoxFactory::NUM_TYPES
? InfoBoxFactory::GetCaption(type)
: NULL;
if (caption == NULL)
caption = _("Invalid");
else
caption = gettext(caption);
canvas.Select(parent->GetInfoBoxLook().title_font);
canvas.SetBackgroundTransparent();
canvas.SetTextColor(is_current ? COLOR_WHITE : COLOR_BLACK);
canvas.DrawText(2, 2, caption);
}
void
BufferCanvas::Commit(Canvas &other)
{
assert(IsDefined());
assert(active);
assert(GetWidth() == other.GetWidth());
assert(GetHeight() == other.GetHeight());
if (frame_buffer != nullptr) {
assert(OpenGL::translate.x == 0);
assert(OpenGL::translate.y == 0);
frame_buffer->Unbind();
/* restore the old viewport */
assert(OpenGL::translate == RasterPoint(0, 0));
#ifdef HAVE_GLES
/* there's no glPopAttrib() on GL/ES; emulate it */
glViewport(old_viewport[0], old_viewport[1],
old_viewport[2], old_viewport[3]);
#else
glPopAttrib();
#endif
#ifdef USE_GLSL
OpenGL::projection_matrix = old_projection_matrix;
OpenGL::UpdateShaderProjectionMatrix();
#else
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
#endif
OpenGL::translate = old_translate;
OpenGL::viewport_size = old_size;
#ifdef USE_GLSL
glVertexAttrib4f(OpenGL::Attribute::TRANSLATE,
OpenGL::translate.x, OpenGL::translate.y, 0, 0);
#endif
#ifdef SOFTWARE_ROTATE_DISPLAY
OpenGL::display_orientation = old_orientation;
#endif
/* copy frame buffer to screen */
CopyTo(other);
} else {
assert(offset == other.offset);
/* copy screen to texture */
CopyToTexture(*texture, GetRect());
}
active = false;
}
void
ListControl::DrawItems(Canvas &canvas, unsigned start, unsigned end) const
{
PixelRect rc = item_rect(start);
canvas.SetBackgroundColor(look.list.background_color);
canvas.SetBackgroundTransparent();
canvas.Select(*look.list.font);
#ifdef ENABLE_OPENGL
/* enable clipping */
GLScissor scissor(OpenGL::translate.x,
OpenGL::screen_height - OpenGL::translate.y - canvas.GetHeight() - 1,
scroll_bar.GetLeft(GetSize()), canvas.GetHeight());
#endif
unsigned last_item = std::min(length, end);
const bool focused = HasFocus();
for (unsigned i = start; i < last_item; i++) {
const bool selected = i == cursor;
const bool pressed = selected && drag_mode == DragMode::CURSOR;
canvas.DrawFilledRectangle(rc,
look.list.GetBackgroundColor(selected,
focused,
pressed));
canvas.SetTextColor(look.list.GetTextColor(selected, focused, pressed));
if (item_renderer != nullptr)
item_renderer->OnPaintItem(canvas, rc, i);
if (focused && selected)
canvas.DrawFocusRectangle(rc);
rc.Offset(0, rc.bottom - rc.top);
}
/* paint the bottom part below the last item */
rc.bottom = canvas.GetHeight();
if (rc.bottom > rc.top)
canvas.DrawFilledRectangle(rc, look.list.background_color);
}
void
WaypointDetailsWidget::OnImagePaint(Canvas &canvas, const PixelRect &rc)
{
canvas.ClearWhite();
if (page >= 3 && page < 3 + (int)images.size()) {
Bitmap &img = images[page-3];
static constexpr int zoom_factors[] = { 1, 2, 4, 8, 16, 32 };
RasterPoint img_pos, screen_pos;
PixelSize screen_size;
PixelSize img_size = img.GetSize();
fixed scale = std::min((fixed)canvas.GetWidth() / (fixed)img_size.cx,
(fixed)canvas.GetHeight() / (fixed)img_size.cy) *
zoom_factors[zoom];
// centered image and optionally zoomed into the center of the image
fixed scaled_size = img_size.cx * scale;
if (scaled_size <= (fixed)canvas.GetWidth()) {
img_pos.x = 0;
screen_pos.x = (int) (((fixed)canvas.GetWidth() - scaled_size) / 2);
screen_size.cx = (int) scaled_size;
} else {
scaled_size = (fixed)canvas.GetWidth() / scale;
img_pos.x = (int) (((fixed)img_size.cx - scaled_size) / 2);
img_size.cx = (int) scaled_size;
screen_pos.x = 0;
screen_size.cx = canvas.GetWidth();
}
scaled_size = img_size.cy * scale;
if (scaled_size <= (fixed)canvas.GetHeight()) {
img_pos.y = 0;
screen_pos.y = (int) (((fixed)canvas.GetHeight() - scaled_size) / 2);
screen_size.cy = (int) scaled_size;
} else {
scaled_size = (fixed)canvas.GetHeight() / scale;
img_pos.y = (int) (((fixed)img_size.cy - scaled_size) / 2);
img_size.cy = (int) scaled_size;
screen_pos.y = 0;
screen_size.cy = canvas.GetHeight();
}
canvas.Stretch(screen_pos.x, screen_pos.y, screen_size.cx, screen_size.cy,
img, img_pos.x, img_pos.y, img_size.cx, img_size.cy);
}
}
/**
* Basic ctor.
*/
void testBasicCtor()
{
int argc = 0;
TS_TRACE("Canvas basic ctor");
QApplication app(argc, (char **)nullptr, 0); // Necessary to run up a Canvas.
Canvas c;
TS_ASSERT_EQUALS(c.IsDefined(), true);
TS_ASSERT_EQUALS(c.GetWidth(), 0);
TS_ASSERT_EQUALS(c.GetHeight(), 0);
}
/**
* Paints the basic info for the selected target on the given canvas
* @param canvas The canvas to paint on
*/
void
FlarmTrafficControl::PaintTrafficInfo(Canvas &canvas) const
{
// Don't paint numbers if no plane selected
if (selection == -1 && !WarningMode())
return;
// Shortcut to the selected traffic
FlarmTraffic traffic = data.list[WarningMode() ? warning : selection];
assert(traffic.IsDefined());
const unsigned padding = Layout::GetTextPadding();
PixelRect rc;
rc.left = padding;
rc.top = padding;
rc.right = canvas.GetWidth() - padding;
rc.bottom = canvas.GetHeight() - padding;
// Set the text color and background
switch (traffic.alarm_level) {
case FlarmTraffic::AlarmType::LOW:
case FlarmTraffic::AlarmType::INFO_ALERT:
canvas.SetTextColor(look.warning_color);
break;
case FlarmTraffic::AlarmType::IMPORTANT:
case FlarmTraffic::AlarmType::URGENT:
canvas.SetTextColor(look.alarm_color);
break;
case FlarmTraffic::AlarmType::NONE:
canvas.SetTextColor(look.default_color);
break;
}
canvas.SetBackgroundTransparent();
// Climb Rate
if (!WarningMode() && traffic.climb_rate_avg30s_available)
PaintClimbRate(canvas, rc, traffic.climb_rate_avg30s);
// Distance
PaintDistance(canvas, rc, traffic.distance);
// Relative Height
PaintRelativeAltitude(canvas, rc, traffic.relative_altitude);
// ID / Name
if (!traffic.HasAlarm())
canvas.SetTextColor(look.selection_color);
PaintID(canvas, rc, traffic);
}
void
InfoBoxWindow::Paint(Canvas &canvas)
{
const Color background_color = pressed
? look.pressed_background_color
: (HasFocus() || dragging || force_draw_selector
? look.focused_background_color
: look.background_color);
if (settings.border_style == InfoBoxSettings::BorderStyle::GLASS)
DrawGlassBackground(canvas, canvas.GetRect(), background_color);
else
canvas.Clear(background_color);
if (data.GetCustom() && content != NULL) {
/* if there's no comment, the content object may paint that area,
too */
const PixelRect &rc = data.comment.empty()
? value_and_comment_rect
: value_rect;
content->OnCustomPaint(canvas, rc);
}
canvas.SetBackgroundTransparent();
PaintTitle(canvas);
PaintComment(canvas);
PaintValue(canvas, background_color);
if (border_kind != 0) {
canvas.Select(look.border_pen);
const UPixelScalar width = canvas.GetWidth(),
height = canvas.GetHeight();
if (border_kind & BORDERTOP) {
canvas.DrawExactLine(0, 0, width - 1, 0);
}
if (border_kind & BORDERRIGHT) {
canvas.DrawExactLine(width - 1, 0, width - 1, height);
}
if (border_kind & BORDERBOTTOM) {
canvas.DrawExactLine(0, height - 1, width - 1, height - 1);
}
if (border_kind & BORDERLEFT) {
canvas.DrawExactLine(0, 0, 0, height - 1);
}
}
}
TEXLoader::IoStatus TEXLoader::ReadJpeg(Canvas& canvas) {
unsigned size;
load_file_->Read(size);
jpeg_decompress_struct _c_info;
jpeg_error_mgr j_err;
_c_info.err = jpeg_std_error(&j_err);
jpeg_create_decompress(&_c_info);
InitSourceManager(&_c_info);
if (jpeg_read_header(&_c_info, TRUE) != JPEG_HEADER_OK) {
jpeg_destroy_decompress(&_c_info);
return kStatusReadHeaderError;
}
if (jpeg_start_decompress(&_c_info) != TRUE) {
jpeg_destroy_decompress(&_c_info);
return kStatusReadPictureError;
}
if (_c_info.output_components == 1) {
// Create grayscale palette.
Color palette[256];
for (int i = 0; i < 256; i++) {
palette[i].Set(i, i, i, i);
}
canvas.SetPalette(palette);
}
uint8* buffer = (uint8*)canvas.GetBuffer();
int row_stride = canvas.GetPitch() * canvas.GetPixelByteSize();
int scan_lines = canvas.GetHeight();
JSAMPROW offset[1];
offset[0] = buffer;
for (int i = 0; i < scan_lines; i++) {
jpeg_read_scanlines(&_c_info, offset, 1);
offset[0] += row_stride;
}
jpeg_finish_decompress(&_c_info);
jpeg_destroy_decompress(&_c_info);
load_file_->SeekCur(size);
return kStatusSuccess;
}
void
SmallTrafficWindow::OnPaint(Canvas &canvas)
{
FlarmTrafficWindow::OnPaint(canvas);
if (pressed) {
#ifdef ENABLE_OPENGL
const GLBlend blend(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
canvas.DrawFilledRectangle(0, 0, canvas.GetWidth(), canvas.GetHeight(),
COLOR_YELLOW.WithAlpha(80));
#else
canvas.InvertRectangle(GetClientRect());
#endif
}
}
void
SmallTrafficWindow::OnPaint(Canvas &canvas)
{
FlarmTrafficWindow::OnPaint(canvas);
if (pressed) {
#ifdef ENABLE_OPENGL
const ScopeAlphaBlend alpha_blend;
canvas.DrawFilledRectangle(0, 0, canvas.GetWidth(), canvas.GetHeight(),
COLOR_YELLOW.WithAlpha(80));
#else
canvas.InvertRectangle(GetClientRect());
#endif
}
}
bool
MapCanvas::IsVisible(const Canvas &canvas,
const RasterPoint *screen, unsigned num)
{
PixelRect bounds;
bounds.left = 0x7fff;
bounds.top = 0x7fff;
bounds.right = -1;
bounds.bottom = -1;
for (unsigned i = 0; i < num; ++i)
UpdateBounds(bounds, screen[i]);
return bounds.left < (int)canvas.GetWidth() && bounds.right >= 0 &&
bounds.top < (int)canvas.GetHeight() && bounds.bottom >= 0;
}
void
SmallTrafficWindow::OnPaint(Canvas &canvas)
{
FlarmTrafficWindow::OnPaint(canvas);
if (pressed) {
#ifdef ENABLE_OPENGL
GLEnable blend(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
canvas.DrawFilledRectangle(0, 0, canvas.GetWidth(), canvas.GetHeight(),
COLOR_YELLOW.WithAlpha(80));
#elif defined(USE_GDI)
const PixelRect rc = GetClientRect();
::InvertRect(canvas, &rc);
#endif
}
}
void
ProgressWindow::OnPaint(Canvas &canvas)
{
canvas.Clear(background_color);
// Determine window size
const unsigned window_width = canvas.GetWidth();
const unsigned window_height = canvas.GetHeight();
PixelRect logo_rect;
logo_rect.left = 0;
logo_rect.top = 0;
logo_rect.right = window_width;
logo_rect.bottom = window_height - progress_border_height;
logo.draw(canvas, logo_rect);
// Draw progress bar background
canvas.Stretch(0, (window_height - progress_border_height),
window_width, progress_border_height,
bitmap_progress_border);
ContainerWindow::OnPaint(canvas);
}
void
Canvas::Copy(const Canvas &src, int src_x, int src_y)
{
Copy(0, 0, src.GetWidth(), src.GetHeight(), src, src_x, src_y);
}
void CopyAnd(const Canvas &src) {
CopyAnd(0, 0, src.GetWidth(), src.GetHeight(),
src.buffer, 0, 0);
}
TEXLoader::IoStatus TEXLoader::WriteJpeg(const Canvas& canvas) {
int size_offset = (int)save_file_->Tell();
unsigned size = 0;
save_file_->Write(size); // We will update this data after writing the jpeg image.
int start_offset = (int)save_file_->Tell();
jpeg_compress_struct _c_info;
jpeg_error_mgr j_err;
_c_info.err = jpeg_std_error(&j_err);
jpeg_create_compress(&_c_info);
InitDestinationManager(&_c_info);
_c_info.image_width = canvas.GetWidth();
_c_info.image_height = canvas.GetHeight();
if (canvas.GetBitDepth() == Canvas::kBitdepth8Bit) {
_c_info.input_components = 1;
_c_info.in_color_space = JCS_GRAYSCALE;
} else {
_c_info.input_components = 3;
_c_info.in_color_space = JCS_RGB;
}
// If the image is in 8-bit mode, it is considered to be a grayscale image.
// Otherwise, we must make sure that the image is in 24-bit kRgb mode.
Canvas copy(canvas, true);
if (copy.GetBitDepth() != Canvas::kBitdepth24Bit &&
copy.GetBitDepth() != Canvas::kBitdepth8Bit) {
copy.ConvertBitDepth(Canvas::kBitdepth24Bit);
}
jpeg_set_defaults(&_c_info);
jpeg_start_compress(&_c_info, TRUE);
uint8* buffer = (uint8*)copy.GetBuffer();
int row_stride = copy.GetPitch() * copy.GetPixelByteSize();
int scan_lines = copy.GetHeight();
JSAMPROW offset[1];
offset[0] = buffer;
for (int i = 0; i < scan_lines; i++) {
jpeg_write_scanlines(&_c_info, offset, 1);
offset[0] += row_stride;
}
jpeg_finish_compress(&_c_info);
jpeg_destroy_compress(&_c_info);
// Calculate and write the size of this jpeg image.
const int end_offset = (int)save_file_->Tell();
size = (unsigned)(end_offset - start_offset);
save_file_->SeekSet(size_offset);
save_file_->Write(size);
// Go back to where we were...
save_file_->SeekEnd(0);
return kStatusSuccess;
}
void
MapWindow::OnPaint(Canvas &canvas)
{
#ifdef ENABLE_OPENGL
DoubleBufferWindow::OnPaint(canvas);
#else /* !ENABLE_OPENGL */
if (buffer_generation == ui_generation)
DoubleBufferWindow::OnPaint(canvas);
else if (scale_buffer > 0 && visible_projection.IsValid() &&
buffer_projection.IsValid()) {
/* while zooming/panning, project the current buffer into the
Canvas */
--scale_buffer;
/* do the projection */
const UPixelScalar buffer_width = buffer_projection.GetScreenWidth();
const UPixelScalar buffer_height = buffer_projection.GetScreenHeight();
const RasterPoint top_left =
visible_projection.GeoToScreen(buffer_projection.ScreenToGeo(0, 0));
RasterPoint bottom_right =
visible_projection.GeoToScreen(buffer_projection.ScreenToGeo(buffer_width,
buffer_height));
/* compensate for rounding errors in destination area */
if (abs(buffer_width - (bottom_right.x - top_left.x)) < 5)
bottom_right.x = top_left.x + buffer_width;
if (abs(buffer_height - (bottom_right.y - top_left.y)) < 5)
bottom_right.y = top_left.y + buffer_height;
if (top_left.x > bottom_right.x || top_left.y > bottom_right.y) {
/* paranoid sanity check */
canvas.ClearWhite();
return;
}
/* clear the areas around the buffer */
canvas.SelectNullPen();
canvas.SelectWhiteBrush();
if (top_left.x > 0)
canvas.Rectangle(0, 0, top_left.x, canvas.GetHeight());
if (bottom_right.x < (int)canvas.GetWidth())
canvas.Rectangle(bottom_right.x, 0,
canvas.GetWidth(), canvas.GetHeight());
if (top_left.y > 0)
canvas.Rectangle(top_left.x, 0, bottom_right.x, top_left.y);
if (bottom_right.y < (int)canvas.GetHeight())
canvas.Rectangle(top_left.x, bottom_right.y,
bottom_right.x, canvas.GetHeight());
/* now stretch the buffer into the window Canvas */
ScopeLock protect(DoubleBufferWindow::mutex);
const Canvas &src = GetVisibleCanvas();
canvas.Stretch(top_left.x, top_left.y,
bottom_right.x - top_left.x, bottom_right.y - top_left.y,
src, 0, 0, buffer_width, buffer_height);
} else
/* the UI has changed since the last DrawThread iteration has
started: the buffer has invalid data, paint a white window
instead */
canvas.ClearWhite();
#endif /* !ENABLE_OPENGL */
}
void
WndForm::OnPaint(Canvas &canvas)
{
const SingleWindow &main_window = GetMainWindow();
gcc_unused const bool is_active = main_window.IsTopDialog(*this);
#ifdef ENABLE_OPENGL
if (!IsMaximised() && is_active) {
/* draw a shade around the current dialog to emphasise it */
GLEnable blend(GL_BLEND);
glEnableClientState(GL_COLOR_ARRAY);
const PixelRect rc = GetClientRect();
const PixelScalar size = Layout::SmallScale(4);
const RasterPoint vertices[8] = {
{ rc.left, rc.top },
{ rc.right, rc.top },
{ rc.right, rc.bottom },
{ rc.left, rc.bottom },
{ rc.left - size, rc.top - size },
{ rc.right + size, rc.top - size },
{ rc.right + size, rc.bottom + size },
{ rc.left - size, rc.bottom + size },
};
glVertexPointer(2, GL_VALUE, 0, vertices);
static constexpr Color inner_color = COLOR_BLACK.WithAlpha(192);
static constexpr Color outer_color = COLOR_BLACK.WithAlpha(16);
static constexpr Color colors[8] = {
inner_color,
inner_color,
inner_color,
inner_color,
outer_color,
outer_color,
outer_color,
outer_color,
};
#ifdef HAVE_GLES
glColorPointer(4, GL_FIXED, 0, colors);
#else
glColorPointer(4, GL_UNSIGNED_BYTE, 0, colors);
#endif
static constexpr GLubyte indices[] = {
0, 4, 1, 4, 5, 1,
1, 5, 2, 5, 6, 2,
2, 6, 3, 6, 7, 3,
3, 7, 0, 7, 4, 0,
};
glDrawElements(GL_TRIANGLES, ARRAY_SIZE(indices),
GL_UNSIGNED_BYTE, indices);
glDisableClientState(GL_COLOR_ARRAY);
}
#endif
ContainerWindow::OnPaint(canvas);
// Get window coordinates
PixelRect rcClient = GetClientRect();
// Draw the borders
canvas.DrawRaisedEdge(rcClient);
if (!caption.empty()) {
// Set the colors
canvas.SetTextColor(COLOR_WHITE);
// Set the titlebar font and font-size
canvas.Select(*look.caption.font);
// JMW todo add here icons?
#ifdef EYE_CANDY
canvas.SetBackgroundTransparent();
canvas.Stretch(title_rect.left, title_rect.top,
title_rect.right - title_rect.left,
title_rect.bottom - title_rect.top,
look.caption.background_bitmap);
// Draw titlebar text
canvas.DrawText(title_rect.left + Layout::FastScale(2), title_rect.top,
caption.c_str());
#else
canvas.SetBackgroundColor(is_active
? look.caption.background_color
: look.caption.inactive_background_color);
canvas.DrawOpaqueText(title_rect.left + Layout::FastScale(2),
title_rect.top, title_rect, caption.c_str());
#endif
}
if (dragging) {
#ifdef ENABLE_OPENGL
GLEnable blend(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
canvas.DrawFilledRectangle(0, 0, canvas.GetWidth(), canvas.GetHeight(),
COLOR_YELLOW.WithAlpha(80));
#elif defined(USE_GDI)
::InvertRect(canvas, &title_rect);
#endif
}
}
void
WndForm::OnPaint(Canvas &canvas)
{
const SingleWindow &main_window = GetMainWindow();
gcc_unused const bool is_active = main_window.IsTopDialog(*this);
#ifdef ENABLE_OPENGL
if (!IsDithered() && !IsMaximised() && is_active) {
/* draw a shade around the current dialog to emphasise it */
const ScopeAlphaBlend alpha_blend;
const PixelRect rc = GetClientRect();
const PixelScalar size = Layout::VptScale(4);
const RasterPoint vertices[8] = {
{ rc.left, rc.top },
{ rc.right, rc.top },
{ rc.right, rc.bottom },
{ rc.left, rc.bottom },
{ rc.left - size, rc.top - size },
{ rc.right + size, rc.top - size },
{ rc.right + size, rc.bottom + size },
{ rc.left - size, rc.bottom + size },
};
const ScopeVertexPointer vp(vertices);
static constexpr Color inner_color = COLOR_BLACK.WithAlpha(192);
static constexpr Color outer_color = COLOR_BLACK.WithAlpha(16);
static constexpr Color colors[8] = {
inner_color,
inner_color,
inner_color,
inner_color,
outer_color,
outer_color,
outer_color,
outer_color,
};
const ScopeColorPointer cp(colors);
static constexpr GLubyte indices[] = {
0, 4, 1, 4, 5, 1,
1, 5, 2, 5, 6, 2,
2, 6, 3, 6, 7, 3,
3, 7, 0, 7, 4, 0,
};
glDrawElements(GL_TRIANGLES, ARRAY_SIZE(indices),
GL_UNSIGNED_BYTE, indices);
}
#endif
ContainerWindow::OnPaint(canvas);
// Get window coordinates
PixelRect rcClient = GetClientRect();
// Draw the borders
if (!IsMaximised()) {
#ifndef USE_GDI
if (IsDithered())
canvas.DrawOutlineRectangle(rcClient.left, rcClient.top,
rcClient.right - 1, rcClient.bottom - 1,
COLOR_BLACK);
else
#endif
canvas.DrawRaisedEdge(rcClient);
}
if (!caption.empty()) {
// Set the colors
canvas.SetTextColor(COLOR_WHITE);
// Set the titlebar font and font-size
canvas.Select(*look.caption.font);
// JMW todo add here icons?
#ifdef EYE_CANDY
if (!IsDithered() && is_active) {
canvas.SetBackgroundTransparent();
canvas.Stretch(title_rect.left, title_rect.top,
title_rect.right - title_rect.left,
title_rect.bottom - title_rect.top,
look.caption.background_bitmap);
// Draw titlebar text
canvas.DrawText(title_rect.left + Layout::GetTextPadding(),
title_rect.top, caption.c_str());
} else {
#endif
canvas.SetBackgroundColor(is_active
? look.caption.background_color
: look.caption.inactive_background_color);
canvas.DrawOpaqueText(title_rect.left + Layout::GetTextPadding(),
title_rect.top, title_rect, caption.c_str());
#ifdef EYE_CANDY
}
#endif
}
if (dragging) {
#ifdef ENABLE_OPENGL
const ScopeAlphaBlend alpha_blend;
canvas.DrawFilledRectangle(0, 0, canvas.GetWidth(), canvas.GetHeight(),
COLOR_YELLOW.WithAlpha(80));
#elif defined(USE_GDI)
canvas.InvertRectangle(title_rect);
#else
canvas.InvertRectangle(GetClientRect());
#endif
}
}