// Draw a line using the current pen color.
void ScrollView::Line(int x1, int y1, int x2, int y2) {
if (!points_->xcoords.empty() && x1 == points_->xcoords.back() &&
TranslateYCoordinate(y1) == points_->ycoords.back()) {
// We are already at x1, y1, so just draw to x2, y2.
DrawTo(x2, y2);
} else if (!points_->xcoords.empty() && x2 == points_->xcoords.back() &&
TranslateYCoordinate(y2) == points_->ycoords.back()) {
// We are already at x2, y2, so just draw to x1, y1.
DrawTo(x1, y1);
} else {
// This is a new line.
SetCursor(x1, y1);
DrawTo(x2, y2);
}
}
// Send an image of type Pix.
void ScrollView::Image(struct Pix* image, int x_pos, int y_pos) {
l_uint8* data;
size_t size;
pixWriteMem(&data, &size, image, IFF_PNG);
int base64_len = (size + 2) / 3 * 4;
y_pos = TranslateYCoordinate(y_pos);
SendMsg("readImage(%d,%d,%d)", x_pos, y_pos, base64_len);
// Base64 encode the data.
const char kBase64Table[64] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '+', '/',
};
char* base64 = new char[base64_len + 1];
memset(base64, '=', base64_len);
base64[base64_len] = '\0';
int remainder = 0;
int bits_left = 0;
int code_len = 0;
for (size_t i = 0; i < size; ++i) {
int code = (data[i] >> (bits_left + 2)) | remainder;
base64[code_len++] = kBase64Table[code & 63];
bits_left += 2;
remainder = data[i] << (6 - bits_left);
if (bits_left == 6) {
base64[code_len++] = kBase64Table[remainder & 63];
bits_left = 0;
remainder = 0;
}
}
if (bits_left > 0)
base64[code_len++] = kBase64Table[remainder & 63];
SendRawMessage(base64);
delete [] base64;
lept_free(data);
}
// Zoom the window to the rectangle given upper left corner and
// lower right corner.
void ScrollView::ZoomToRectangle(int x1, int y1, int x2, int y2) {
y1 = TranslateYCoordinate(y1);
y2 = TranslateYCoordinate(y2);
SendMsg("zoomRectangle(%d,%d,%d,%d)",
std::min(x1, x2), std::min(y1, y2), std::max(x1, x2), std::max(y1, y2));
}
// Open and draw an image given a name at (x,y).
void ScrollView::Image(const char* image, int x_pos, int y_pos) {
SendMsg("openImage('%s')", image);
SendMsg("drawImage('%s',%d,%d)",
image, x_pos, TranslateYCoordinate(y_pos));
}
// Draw text at the given coordinates.
void ScrollView::Text(int x, int y, const char* mystring) {
SendMsg("drawText(%d,%d,'%s')", x, TranslateYCoordinate(y), mystring);
}
// Draw an ellipse using the current pen color.
// The ellipse is filled with the current brush color.
void ScrollView::Ellipse(int x1, int y1, int width, int height) {
SendMsg("drawEllipse(%d,%d,%u,%u)",
x1, TranslateYCoordinate(y1), width, height);
}
// Draw a rectangle using the current pen color.
// The rectangle is filled with the current brush color.
void ScrollView::Rectangle(int x1, int y1, int x2, int y2) {
if (x1 == x2 && y1 == y2)
return; // Scrollviewer locks up.
SendMsg("drawRectangle(%d,%d,%d,%d)",
x1, TranslateYCoordinate(y1), x2, TranslateYCoordinate(y2));
}
// Draws from the current position to (x,y) and sets the new position to it.
void ScrollView::DrawTo(int x, int y) {
points_->xcoords.push_back(x);
points_->ycoords.push_back(TranslateYCoordinate(y));
points_->empty = false;
}
// Zoom the window to the rectangle given upper left corner and
// lower right corner.
void ScrollView::ZoomToRectangle(int x1, int y1, int x2, int y2) {
y1 = TranslateYCoordinate(y1);
y2 = TranslateYCoordinate(y2);
SendMsg("zoomRectangle(%d,%d,%d,%d)",
MIN(x1, x2), MIN(y1, y2), MAX(x1, x2), MAX(y1, y2));
}
// Draw a rectangle using the current pen color.
// The rectangle is filled with the current brush color.
void ScrollView::Rectangle(int x1, int y1, int x2, int y2) {
SendMsg("drawRectangle(%d,%d,%d,%d)",
x1, TranslateYCoordinate(y1), x2, TranslateYCoordinate(y2));
}
