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[online_image] add option to show placeholder while downloading (#7083)

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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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guillempages 2024-08-13 09:44:43 +02:00 committed by GitHub
parent 2a70ef05d1
commit 506e69addf
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3 changed files with 25 additions and 0 deletions
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6
esphome/components/online_image/__init__.py
View file

@ -27,6 +27,7 @@ CODEOWNERS = ["@guillempages"]
MULTI_CONF = True
CONF_ON_DOWNLOAD_FINISHED = "on_download_finished"
CONF_PLACEHOLDER = "placeholder"
_LOGGER = logging.getLogger(__name__)
@ -73,6 +74,7 @@ ONLINE_IMAGE_SCHEMA = cv.Schema(
#
cv.Required(CONF_URL): cv.url,
cv.Required(CONF_FORMAT): cv.enum(IMAGE_FORMAT, upper=True),
cv.Optional(CONF_PLACEHOLDER): cv.use_id(Image_),
cv.Optional(CONF_BUFFER_SIZE, default=2048): cv.int_range(256, 65536),
cv.Optional(CONF_ON_DOWNLOAD_FINISHED): automation.validate_automation(
{
@ -152,6 +154,10 @@ async def to_code(config):
cg.add(var.set_transparency(transparent))
if placeholder_id := config.get(CONF_PLACEHOLDER):
placeholder = await cg.get_variable(placeholder_id)
cg.add(var.set_placeholder(placeholder))
for conf in config.get(CONF_ON_DOWNLOAD_FINISHED, []):
trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
await automation.build_automation(trigger, [], conf)

8
esphome/components/online_image/online_image.cpp
View file

@ -35,6 +35,14 @@ OnlineImage::OnlineImage(const std::string &url, int width, int height, ImageFor
this->set_url(url);
}
void OnlineImage::draw(int x, int y, display::Display *display, Color color_on, Color color_off) {
if (this->data_start_) {
Image::draw(x, y, display, color_on, color_off);
} else if (this->placeholder_) {
this->placeholder_->draw(x, y, display, color_on, color_off);
}
}
void OnlineImage::release() {
if (this->buffer_) {
ESP_LOGD(TAG, "Deallocating old buffer...");

11
esphome/components/online_image/online_image.h
View file

@ -50,6 +50,8 @@ class OnlineImage : public PollingComponent,
OnlineImage(const std::string &url, int width, int height, ImageFormat format, image::ImageType type,
uint32_t buffer_size);
void draw(int x, int y, display::Display *display, Color color_on, Color color_off) override;
void update() override;
void loop() override;
@ -60,6 +62,14 @@ class OnlineImage : public PollingComponent,
}
}
/**
* @brief Set the image that needs to be shown as long as the downloaded image
* is not available.
*
* @param placeholder Pointer to the (@link Image) to show as placeholder.
*/
void set_placeholder(image::Image *placeholder) { this->placeholder_ = placeholder; }
/**
* Release the buffer storing the image. The image will need to be downloaded again
* to be able to be displayed.
@ -113,6 +123,7 @@ class OnlineImage : public PollingComponent,
DownloadBuffer download_buffer_;
const ImageFormat format_;
image::Image *placeholder_{nullptr};
std::string url_{""};